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Dr. Iam-Choon Khoo
Current Position/Address:
William E. Leonhard Chair Professor of Electrical Engineering
Director – Liquid Crystals and Nonlinear Optics Laboratory
216 Electrical Engineering East
The Pennsylvania State University
University Park, PA 16802
Tel: (814) 863-2299 Fax: (814) 865-7065 E-mail: ick1@ psu.edu
Degrees:
B. Sc. (1st Class Honors) Physics, University of Malaya 1971
M.A. Physics, University of Rochester, Rochester, NY 1973
Ph D. Physics, University of Rochester, Rochester, NY 1976
Professional History:
2006 - Present – William E. Leonhard Chair Professor of Electrical Engineering
2000-2006 – Distinguished Professor of Electrical Engineering
1987-2000 – Pennsylvania State University-Professor of Electrical Engineering
9/98 - 1/99 – Princeton University [EE Department] - Fellow [sabbatical]
9/90-12/90 – Princeton University [Physics Department] - Fellow [sabbatical]
National Research Council, Ottawa, Canada - Senior Visiting Scientist
1984-1987 – Pennsylvania State University-Associate Professor of Electrical Engineering
1979-1984 – Wayne State University-Assistant/Associate Professor of Physics
1/79 - 9/79 – University of Toronto-Research Fellow
1977-1978 – University of Southern California -Research Associate
1978-1979 – University of Michigan – Research Associate [with Emmitt Leith]
1976-1977 – Ames Laboratory, U.S. Department of Energy, Iowa-Postdoctoral Fellow
Professional Society Membership:
° Optical Society of America (OSA) --Fellow
° UK Institute of Physics --Fellow
° Institute of Electrical and Electronics Engineers (IEEE) --Fellow
° The Electromagnetic Academy --Fellow
Honors and Awards:
° Chair of the United State Advisory Committee /ICO – The National Academies [
Sciences and Engineering] (1/2008-12/2010)
° Appointed IEEE-Photonics Society (formerlyLEOS) Vice President Representative to
International Commission for Optics (ICO) [2005-2008; 2008-2010]
° Awarded Sir Pao Yu-Kong Chair Professorship by Zhejiang University, Hangzhou,
China (2013)
° Elected Fellow of The Electromagnetic Academy FEMA (2014)
° Plenary Speaker – Cambridge University Int. Workshop on Liquid Crystal in Photonics
(2008).
° 2003 Sturgeon Memorial Plenary Lecturer, Cambridge University [British Liquid
Crystal Society]
° Appointed Vice President –Technical Affairs, IEEE –Lasers and Electro-Optics Society
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(2001 -2004)
° Awarded Distinguished Professorship – Pennsylvania State University (2000; 2006)
° UK Institute of Physics (Inst. P)—Awarded Fellow (1999)
° IEEE Lasers and Electro-Optics Society - Elected Fellow (1998)
° Pennsylvania State Engineering Society-Premier Research Award (1995)
° Penn State Research Foundation Invention Incentive Awards (1994, 1995)
° Appointed Laser Specialist by World Bank to evaluate Key Universities in China (1990)
° Pennsylvania State University -Faculty Scholar Medal for Outstanding Achievements in
Science and Engineering (1988)
° Optical Society of America - Elected Fellow (1988)
° Pennsylvania State Engineering Society- Outstanding Research Faculty Award (1987)
° Research Corporation Cottrell Research Award (1981)
° University of Rochester - University Fellow (1972, 1973)
National & International Professional Activities
-National Academy of Science and Academy of Engineering: United States Advisory
Committee/Int. Comm. For Optics [Chair (1/2008 – 12/2010); Member (1/2006 -12/2013)]
-Technical Journal Referee: IEEE J. Quantum Electronics; J. Optical Society of America B;
Optics Express, Optics Letters; Physical Reviews and Physical Review Letters; Optics
Communication; Liquid Crystals; Molecular Crystals Liquid Crystals; IEEE J. Lightwave
Technology; Applied Optics; Applied Physics Letters, Journal of Appl. Physics; Nature
Photonics.
- Proposal reviewer/panelist for various U.S. [NSF, AFOSR, ARO], Government Scientific
Research Agencies of Canada, Italy, Belgium, Poland, Hong Kong, UK.
- Advisory Board Member of: (1) the Italian National Research Council [CNR] International
Committee on Multi-DisciplinaryResearch Center [LICRYL]. (2006-2009); (2) State Key
Laboratory on Display and Organic LED, Hong Kong University of Science and
Technology (2013-present)
- External Ph. D. Examiner – Trinity College, Dublin, Ireland (2001); Chalmers University,
Sweden (2002); Cambridge University (Electrical Engineering 2005)
- Editor-in-Chief of Journal of Nonlinear Optical Physics & Materials (1991 - present).
- Chairmanship of international technical conferences:-
* IEEE Lasers and Electro-Optics Society
- Chair of IEEE Lasers and Electro-Optics Society Technical Council [11/2001-
11/2004]
- Chair, Nonlinear Optics Technical Committee (‘92 -’95, ’99 –‘03)
- Chair, 2001Annual Meeting Nonlinear Optics Subcommittee
- Chair, 1990 Nonlinear Optics: Materials, Phenomena and Devices
- Chair, Nonlinear Optics Technical Committee, 2005 Annual Lasers and Electro-
Optics Society Technical Meeting
- Conference co-chair, 2007 IEEE-LEOS Topical Meeting on “Organic Photonics
Media, Devices and Application,” Portland, Oregon.
* Optical Society of America
- Chair, Steering/Program Committee -Nonlinear Optics ‘92, ‘94, ’96, ’98, ’00, ’03.
- Program co-chair “Int. topical Meeting on Optics of Liquid crystals”, Clearwater,
Florida 10/2005 [Co-sponsored by US Air Force].
* SPIE - Society for Photo-Optical Instrumentation Engineer
- Chair, Technical Symposium on Aerospace Sensing-Optical Switches and Electro-
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Optic Materials ‘89, ’90, ‘92.
- Chair, Conferences on Liquid Crystals I – XVIII - ’97- ’14 continuing…
* European Technical Societies
- Program co-chair, "Mediterranean International topical Meeting on Nonlinear
Photonics and Optical Physics," Capri, Italy (1992).
- Program co-chair, "2nd –10th Mediterranean Workshop on Novel Optical
Materials and Applications," Cetraro, Italy (’95 -‘11).
* Electromagnetic Academy
- Program co-Chair, "Progress in Electromagnetic Research PIERS"
Stockholm, Sweden (2013); Guangzhou, China (2014)
Teaching and Education Highlights
Graduate and Undergraduate Courses Developed
- Developed a Graduate-level EE course: EE 524 – “Lasers and Optical Electronics” [taught the
course yearly since 1986 – present.
- Developed a Senior-level EE course: EE424 - “Lasers: Principles and Application” [taught the
course yearly since 1986 – present.
- Co-Developed a Junior-level course: EE320 – “Electro-Optical Engineering” [offered yearly since
1989]
- Developed and offered occasionally graduate courses on “Liquid crystals” and “Nonlinear
Optical Materials”. Course materials are now integrated into a regular course: EE526 -
Nonlinear Optical Materials that is offered every other year jointly listed with Material
Science and Engineering.
Graduate Student Supervision
Current
1. - Currently Supervisor and Chair of Ph. D. committee of 3 Ph. D. and 1 master graduate
students; Member of Ph. D. committees of 8 Ph. D graduate students
Previous
2. - Supervised 39 Ph. D. and Master Graduates [26 Ph. D and 13 Master]
Role: Thesis Advisor and Chair of committee
- Member of Ph. D. committee of 44 other Ph. D. graduates
Current Research Interests:
Theories and experiments in photonic devices, nonlinear- and electro- optics materials such
as liquid crystals, fibers and nano-structured and plasmonic metamaterials. Studies of coherent
optical wave mixing processes, beam/image/signal processing, optical switching and
modulation, optical limiting and sensor protection applications enabled by unique properties of
these novel optical materials.
Summary of Technical Publications/Patents
*Author/co-author/editor of 7 books and author of 14 book chapters.
* Editor of 18 Conference Proceeding volumes [Liquid Crystal I –XVIII]
* Editor-in-Chief of 23 Volumes-year of Journal [JNOPM 1991-2014].
* H-Index: 44 (Goggle); over 5500 citations in Science Citation Index.
* Authored and co-authored ~ 620 Technical Publications/Conference Presentations
[264 Refereed Journals and Proceedings); 357 (~191 invited) Conference Presentations]
* Awarded two U.S. patents:
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- US Patent # 5,552,915 “Liquid Crystal Nonlinear Photorefractive Electro-Optical
Storage Device Having a Liquid Crystal Film including Dopant species of C60 and
C70” [9/3/1996]
- US Patent #5,589,101“Liquid Crystal Fiber Array for Optical Limiting of Laser
Pulses and for Eye/Sensor Protection” [12/31/1996]. Invention featured in Innovation to
Watch section of Business Week [May 5, ‘97 Issue], Discovery magazine [3/2000] and
Photonic Spectra [6/2000], MIT Technology Review [4/2000] and several National
Newspapers [e.g. Philadelphia Inquirer, New York Times, Houston Chronicles]
New US Patent applied (3/2014) “Apparatus and method for stabilizing the temperature of a
photonic circuit” US patent application filed by SPAWARSYSCEN PACIFIC jointly
with UCSD and PSU - [U. S. Serial No:.14/231,367; Docket No: PSU 2014-4198]. Co-
inventors: Joanna Ptasinski, Lin Pang, Iam-Choon Khoo, Yeshaiahu Fainman, Kim
Sung.
* Expert Witness retained by the Connolly Bove Lodge & Hutz LLP Law Firm of
Wilmington, DE [11/2005- 6/2006] on liquid crystals issues.
Books
1. Author - Liquid Crystals: Physical Properties and Nonlinear Optical Phenomena (Wiley,
NY, 1995).
A 300-page reference/text book intended for graduate students, optical engineers and
research scientists interested in liquid crystal nonlinear optics and basic physics.
2. Author – Liquid Crystals 2nd
Edition (Wiley, NY 2007).
A 400-page reference/text book intended for optical engineers, research scientists and
graduate students interested in the physics, electro-optics and nonlinear optics of liquid crystals.
3. Co-author - Optics and Nonlinear Optics of Liquid Crystals (World Scientific Publishing
Inc., NJ, May 1993).
A 500 page reference book that provides a comprehensive treatment of the fundamentals
of optical, electro-optical and nonlinear-optical properties of liquid crystals, devices and
nonlinear optics.
4. Co-editor - Nonlinear Optics and Optical Physics (World Scientific, Singapore, 1993).
A 400-page reference book, with 16 authors, intended for advanced research scientists.
5. Co-editor - Physics of Liquid Crystalline Materials (Gordon & Breach, NY, 1991).
A 600-page reference book, with 26 authors, intended for advanced researchers.
6. Co-author - Principles of Optical Engineering (Wiley, NY, 1990).
A 260 –page junior/senior year Electrical Engineering textbook.
7. Co-editor - Novel Optical Materials and Applications (Wiley, NY, 1996).
A 320-page reference book for research level optical scientist/engineers.
Proceedings and Journal Volumes
8. Editor - Liquid Crystals I -XVII [1997- 2014] – 18 Proceedings Volumes of SPIE Optics
and Photonics Symposia.
9. Editor- in-Chief - J. Nonlinear Optical Physics and Materials, Vol. 1- Vol. 23 [1992 –
present]
Book Chapters
1. "Nonlinear Optics of Liquid Crystals," Progress in Optics, Vol. XXVI, ed. E. Wolf (North
Holland, Amsterdam, 1988).
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2. "Nonlinear optical processes and applications in the infrared with nematic liquid crystals," in
Nonlinear Optical and Electroactive Polymers, ed. P. N. Prasad and D. R. Ulrich (Plenum,
NY, 1987).
3. "New theoretical and experimental results on multiwave mixing and phase conjugation in
liquid crystals and semiconductors" in Nonlinear Optics of Organics and Semiconductors, ed.
T. Kobayashi (Springer Verlag, Heidelberg, 1988).
4. "An overview of Nonlinear Optics of Liquid Crystals," in Solid State Materials eds. S.
Radhakrishna and A. Daud (Narosa Publishing House, New Delhi, 1991).
5. "Nonresonant Optical Nonlinearities of Liquid Crystals," in Nonlinear Optics and Optical
Physics, eds. I. C. Khoo, J. F. Lam and F. Simoni (World Scientific, NJ, 1993).
6. "Liquid Crystals Nonlinear Optics vs. Photorefractives," in SPIE Critical Review Series, ed.
Pochi Yeh and Claire Gu (Bellingham, WA, 1994).
7. "Liquid Crystal Nonlinear Optics," in Frontiers of Polymers and Advanced Materials, ed. P.
N. Prasad (Plenum, NY, 1994).
8. “C60-Doped Isotropic Liquid Crystal Cored Fiber Structures For All-Optical Switching and
Limiting Application” in Novel Optical Materials and Applications, ed. I. C. Khoo, F. Simoni
and C.Umeton (Wiley Intersceince, NU 1996).
9. “Liquid Crystal Photorefractivity for Recording Holographic Gratings” in Proceedings of 4th
International conference on Frontiers of Polymers and Advanced Materials. ed. P. N. Prasad
and Z. Kafafi. (Plenum, NY 1998)
10. “Nonlinear Optical Properties of Nematic Liquid Crystals”, in Physical Properties of Liquid
Crystals Ed. D. A. Dunmur, A. Fukuda and G. R. Luckhurst (INSPEC, IEE, London, UK, 1999)
11. “Liquid Crystals Photorefractivity” in Photorefractive Materials, Devices and Applications
ed. F. T. S. Yu and S. Yin [Wiley InterScience, NY 1999]
12. “Nonlinear Optics – materials: Liquid crystals for NLO” in Encyclopaedia of Modern
Optics, ed. Bob. D. Guenther et al [Academic Press, 2004].
13. A. Diaz and I. C. Khoo, “Liquid crystalline nano-structured optical metamaterials,” in
Comprehensive Nanoscience and Technology, Vol. 3, pages 225-261 eds. David Andrews,
Gregory Scholes and Gary Wiederrecht [Elseier, 2011]
14. N.V. Tabiryan and I. C. Khoo, “Recent Advances in Nematic Liquid Crystal Nonlinear,”
Optics,” Chapter 16, Vol. 7 in Handbook of Liquid Crystals: 7 Volume Set, 2nd
Edition edited by
J. W. Goodby, P. J. Collings, T. Kato, C. Tschierske, H. Gleeson, and P. Raynes. Wiley-VCH
Verlag GmbH & Co. (2013)
List of Selected Publications
1. Theory of optically induced molecular reorientations and quantitative experiments on wave
mixing and the self-focusing of light. I. C. Khoo, Phys. Rev., A25, 1637 (1982)
2. Optical bistability in nematic film using self-focusing of light. I. C. Khoo, Appl. Phys. Letts.,
41, 909 (1982)
3. Optical bistability in a nematic liquid crystal film inside a Fabry Perot cavity. I. C. Khoo, R.
Normandin and V.C.Y. So, J. Appl. Phys., 53, 7599 (1982).
4. Re-examination of the theory and experimental results of optically induced molecular
reorientation and nonlinear diffractions in nematic liquid crystals: spatial frequency and
temperature dependence. I. C. Khoo, Phys. Rev., A27, 2747 (1983).
5. Theory and experiment on optical bistability in a Fabry-Perot interferometer with an
intracavity nematic liquid-crystal film. I. C. Khoo, J. Y. Hou, R. Normandin and V.C.Y.
So, Phys. Rev., A27, 3251 (1983).
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6. Submillisecond grating diffractions in nematic liquid crystal films. I. C. Khoo and S.
Shepard, J. of Appl. Phys., 54, 5491 (1983).
7. Nanosecond laser-induced transient and erasable permanent grating diffractions and
ultrasonic waves in a smectic film. I. C. Khoo and R. Normandin, J. Appl. Phys., 55,
pp.1416-1418, (1984).
8. Nanosecond degenerate optical wave mixing and ultrasonic wave generation in the nematic
phase of liquid crystals. I. C. Khoo and R. Normandin, Opt. Letts., 9, 285-287 (1984).
9. Observation of intensity-dependent guided waves, H. Vach, C. T. Seaton, G. I. Stegeman and
I. C. Khoo, Opt. Letts., 9, 238 (1984).
10. Theory and experiment on optical transverse intensity bistability in the transmission through
nonlinear thin (nematic liquid crystal) film. I. C. Khoo, P. Y. Yan, T. H. Liu, S. Shepard
and J. Y. Hou, Phys. Rev., A29, 2756 (1984).
11. The mechanism and dynamics of transient thermal grating diffraction in nematic liquid
crystal films. I. C. Khoo and R. Normandin, IEEE J. Quant. Electronics, QE-21, 329
(1985).
12. Nonlinear Fabry Perot action and optical bistability of a dielectric cladded thin film near the
total internal reflection state, I. C. Khoo and J. Y. Hou, J. Opt. Soc., Am. B2, 761 (1985).
13. Liquid crystals--nonlinear optical properties and processes. I. C. Khoo and Y. R. Shen,
(invited paper) Optical Engineering, 24, 579 (1985).
14. Nonlocal transverse dependence of molecular reorientation induced in a nematic liquid
crystal by a Gaussian laser beam. I. C. Khoo, T. H. Liu and R. Normandin, Mol. Cryst. Liq.
Cryst. 131, p. 315 (1985).
15. Infrared to visible image conversion capability of nematic liquid crystal film. I. C. Khoo and
R. Normandin, Appl. Phys. Letts. 47, 350 (1985).
17. Passive optical self-limiter using laser induced axially symmetric and asymmetric transverse
self-phase modulations in a liquid crystal film. I. C. Khoo, G. Finn, R. R. Michael and T.
H. Liu, Optics Letters, 11, 227 (1986).
18. Theory and experiment on optically induced nematics axis reorientation and nonlinear
effects in the nanosecond regime. I. C. Khoo, R. R. Michael and P. Y. Yan, IEEE J. Quant.
Electronics, QE23, 267 (1987).
19. Nonlocal transverse dependence of optically induced director axis reorientation of a nematic
liquid crystal film--theory and experiment. I. C. Khoo, P. Y. Yan and T. H. Liu, J. Opt.
Soc. Am., B, Vol. 4, p. 115 (1987).
20. Transverse self-phase modulation and bistability in the transmission of a laser beam through
a nonlinear thin film. I. C. Khoo, J. Y. Hou, T. H. Liu, P. Y. Yan, R. R. Michael and G. M.
Finn, J. Opt. Soc. Am., B4, 886 (1987).
21. Probe beam amplification via two- and four-wave mixings in a nematic liquid crystal film. I.
C. Khoo and T. H. Liu, IEEE J. Quant. Elect., JQE 23, 171 (1987).
22. Nanosecond laser amplification via degenerate multiwave mixing in silicon. I. C. Khoo and
R. Normandin, Appl. Phys. Letts, 5, 525 (1988).
23. Low power (10.6μm) laser beam amplification via thermal grating mediated degenerate four
wave mixings in a nematic liquid crystal film. I. C. Khoo, P. Y. Yan, G. M. Finn, T. H. Liu
and R. R. Michael, J. Opt. Soc. Am., B5, 202 (1988).
24. Self-pulsing of the laser light transmitted by a nonlinear liquid crystal interface near the
phase transition. F. Simoni, G. Cipparone, C. Umeton and I. C. Khoo, Opt. Letts. 13, 886
(1988).
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25. Stationary and moving thermal grating mediated infrared laser wave mixing and
amplification in nematic liquid crystal films. P. Y. Yan and I. C. Khoo, IEEE J. Quant.
Elect., JQE25, 520 (1989).
26. Self-phase modulation and optical limiting of a low power CO2 laser with a nematic liquid-
crystal film. I. C. Khoo, R. R. Michael and G. M. Finn, Appl. Phys. Letts., 52, 2108 (1988).
27. Dynamics of total-internal-reflection to transmission switching in a dielectric-cladded
nonlinear film. I. C. Khoo and Ping Zhou, J. Opt. Soc. Am., B6, 884 (1989).
28. Theory and experiments on multiwave mixing mediated probe beam amplification. I. C.
Khoo and T. H. Liu, Phys. Rev., A39, 4036 (1989).
29. Degenerate multiwave mixing and phase conjugation in silicon. I. C. Khoo et al., Phys.
Rev., B40, 7759 (1989).
30. Optical switching by a dielectric cladded nematic film. I. C. Khoo, et al., IEEE J. Quant.
Elect., JQE25, 1755 (1989).
31. Nonlinear liquid crystal fiber-fiber coupler for switching and gating operation. I. C. Khoo
and R. Normandin, J. Appl. Phys., 65, 2566 (1989).
32. Probe beam amplification and phase conjugation self-oscillation threshold in a thin Kerr
medium. I. C. Khoo and Y. Zhao, IEEE J. Quant. Elect., JQE25, 368 (1989).
33. Transient multiwave mixing in a nonlinear medium. I. C. Khoo and P. Zhou, Phys. Rev.,
A41, 1544 (1990).
34. A quantitative analysis of picosecond transient multiwave mixings mediated beam
amplification effect in silicon. I. C. Khoo, P. Zhou, R. G. Lindquist and P. LoPresti, Phys.
Rev., A41, 408 (1990).
35. The infrared optical nonlinearities of nematic liquid crystals and novel two-wave mixing
processes. I. C. Khoo, J. Mod. Optics, Vol. 37, 1801 (1990).
36. Stationary equal frequency two-wave mixing with gain in a Bipolar birefringent nonlinear
medium. I. C. Khoo and N. V. Tabiryan, Phys. Rev. A 41, 5528 (May 1990).
37. Optical amplification and polarization switching in a birefringent nonlinear optical medium:
An analysis. I. C. Khoo, Phys. Rev. Lett. 64, 2273 (1990).
38. Dynamics of picosecond laser induced density, temperature and flow-reorientation effects in
the mesophases of liquid crystals. I. C. Khoo, R. G. Lindquist, R. R. Michael, R. J.
Mansfield and P. Lopresti, J. Appl. Phys., 69, 3853 (1991).
39. Laser induced thermal, orientational and density nonlinear optical effects in nematic liquid
crystal. I. C. Khoo, Phys. Rev. A, 42, 1001 (July 1990).
40. Theory and experiments on stationary and nearly degenerate optical wave mixing and ring-
laser oscillation in a Kerr-like medium: Stationary regime. I. C. Khoo and Wei Wang, J.
Opt. Soc. of Am., B8, 1433 (1991).
41. Threshold degenerate wave mixing in dye-doped polymer-dispersed liquid crystal. F.
Simoni, G. Cipparone, D. Duca and I. C. Khoo, Optics Letts. 16, 360 (1991).
42. Effects of diffractions and self-phase modulations on phase conjugation self-oscillation in
Kerr media. I. C. Khoo and W. Wang, J. Quantum Electronics, JQE27, 1310 (1991).
43. Coherent beam amplification and polarization switching in a birefringent medium-
photorefractive crystals. I. C. Khoo, Yu Liang, and Hong Li, IEEE J. Quantum Electronics,
JQE 28, pp. 1816-1824 (1992).
44. Multiwave mixing mediated optical bandpass filter with thin Kerr medium. Wei Wang and
I. C. Khoo, J. Opt. Soc. Am. B, pp. 2088-2093 (1992).
45. Nonlinear interface tunneling phase shift. I. C. Khoo and P. Zhou, Optics Letts., 17, pp.
1325-1327 (1992).
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46. Dynamics of transient probe beam amplification via coherent multiwave mixing in a local
nonlinear medium-nematic liquid crystal. I. C. Khoo, Hong Li, and Yu Liang, IEEE J.
Quant. Electronics, 29, 12 (1993).
47. Optically induced extraordinarily large negative orientational nonlinearity in dye-doped-
liquid crystal. I. C. Khoo, H. Li, and Y. Liang, IEEE J. Quant. Electron, JQE29, pp. 1444-
1447 (1993).
48. Self-starting optical phase conjugation in dyed nematic liquid crystals with a stimulated
thermal-scattering effect. I. C. Khoo, H. Li and Y. Liang, Opt. Letts. 18, 1490 (1993).
49. Observation of optical limiting and backscattering of nanosecond laser pulses in liquid
crystal fibers. I. C. Khoo, H. Li and Y. Liang, Optics Letts., 19, 530 (1994).
50. Transient laser induced orthogonal director axis reorientation in dye-doped liquid crystal.
Hong Li, Yu Liang and I. C. Khoo, Mol. Cryst. Liq. Cryst., 251, 85 (1994).
51. Observation of orientational photorefractive effects in nematic liquid crystals. I. C. Khoo, H.
Li, and Y. Liang, Optics Letts, 19, 1723 (1994).
52. Nonlinear optical propagation and self-limiting effect in liquid crystalline fiber. I. C. Khoo
and H. Li, Appl. Phys. B, 59, p. 573 (1994).
53. Self-starting phase conjugation with cross-polarization stimulated orientational scattering in
liquid crystal. I.C. Khoo and Yu Liang, Optics Letters, 20, 130 (1995).
54. Holographic grating formation in dye- and fullerene C60-doped nematic liquid crystal film.
I. C. Khoo, Optics Letters, 20, 2137 (1996).
55. All Optical switching of infrared optical radiation using isotropic liquid crystals. P. G.
LoPresti, P. Zhou, R. G. Lindquist and I. C. Khoo, IEEE J. Quantum Electronics, JQE 31,
pp. 723 (1995).
56. Optical-dc-field induced space charge fields and photorefractive-like holographic grating
formation in nematic liquid crystals. I.C.Khoo. Mol. Cryst. Liq. Cryst, 282, pp.53-66
(1996).
57. Orientational photorefractive effects in nematic liquid crystal film. I. C. Khoo, IEEE J.
Quantum Electronics JQE 32, pp. 525-534 (1996).
58. Nonlinear Liquid Crystal Fiber Structures for Passive Optical Limiting of Short Laser
Pulses. I. C. Khoo, M. V. Wood, M. Lee and Brett D. Guenther. Optics Letters 21, 1625 -
1627 (1996).
59. Transient multiwave mixing and diffraction with non-sinuoidal intensity dependent index
grating in nematic liquid crystals. P. G. LoPresti and I. C. Khoo. J. Opt. Soc. Am. B14, 804
(1997).
60. Coherent beam amplification with photorefractive liquid crystal. I. C. Khoo, Brett D.
Guenther, M. V. Wood, P. Chen and Min-Yi Shih, Opt. Lett. 22,1229 (1997).
61. Nonlinear- absorption and optical limiting of laser pulses in a liquid-cored fiber array . I. C.
Khoo, M. V. Wood, B. D.Guenther, Min-Yi Shih and P. H. Chen. J. Opt. Soc. Am. B15,
pp. 1533-1540, 1998.
62. I.C. Khoo, S. Slussarenko, B. D. Guenther and W. V. Wood, “Optically Induced Space
Charge Fields, DC Voltage, and Extraordinarily Large Nonlinearity in Dye-doped Nematic
Liquid Crystals,” Opt. Letts 23, pp 253 - 255 (1998).
63. I. C. Khoo, M. V. Wood, B. D. Guenther, Min-Yi Shih, P. H. Chen, Zhaogen Chen and
Xumu Zhang, “Liquid Crystal Film and Nonlinear Optical Liquid Cored Fiber Array for
ps-cw Frequency Agile Laser Optical Limiting Application”. Optics Express, Vol. 2, no.
12.pp 471-82, (1998)
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64. I. C. Khoo, M. V. Wood, M. Y. Shih and P. H. Chen, “Extremely Nonlinear Photosensitive
Liquid Crystals for Image Sensing and Sensor Protection,” Optics Express, Vol. 4, no. 11,
pp 431-442 (1999)
65. I. C. Khoo, P. H. Chen, M. V. Wood, and Min-Yi Shih, “ Molecular photonics of a highly
nonlinear organic fiber core liquid for picosecond -nanosecond optical limiting effect”,
Chemical Physics Vol. 245, pp. 517-531(1999).
66. M. Y. Shih, I. C. Khoo, A. Shishido, M. V. Wood, P. H. Chen, “All-Optical Image
Processing with A Supra Nonlinear Dye-Doped Liquid Crystal Film”, Opt. Letts. 25, 978-
980 (2000).
67. M. Peccianti, A. De Rossi and G. Assanto, A. De Luca and C. P. Umeton and I. C. Khoo,
“Electrically assisted self-confinement and waveguiding in planar nematic liquid crystal
cells, ” Appl. Phys. Letts. 77, pp 7-9 (2000).
68. I. C. Khoo, M. Y. Shih, M. V. Wood and P. H. Chen’ “Extremely nonlinear photosensitive
nematic liquid crystal film,” Synthetic Metals, 7413, 1-6 (2000)
69. I. C. Khoo and Y. Liang, “Stimulated Orientational and Thermal Scatterings and Self-
Starting Optical Phase Conjugation with Nematic Liquid Crystals,” Phys. Rev. E62, pp
6722 –6733 (2000).
70. I. C. Khoo, P. H. Chen, M. Y. Shih, A. Shishido, S. Slussarenko, “Supra Optical
Nonlinearities of Methyl-Red and Azobenzene Liquid Crystal –doped Nematic Liquid
Crystals,” Mol. Cryst. Liq. Cryst. 358, 1-13 [2001]
71. I. C. Khoo, M. Y. Shih, A. Shishido, P.H. Chen and M. V. Wood , “Liquid Crystal
Photorefractivity – Towards Supra-Optical Nonlinearity,” Invited Paper Opt. Mate. 18, 85-
90 (2001).
72. I. C. Khoo, M. Y. Shih and A. Shishido, “Supra Optical Nonlinearities of Photosensitive
Nematic Liquid Crystals,” Mole. Cryst. Liquid. Cryst. 364, 141-149, (2001).
73. Nishimura, Gina L. Egan, Thomas E. Mallouk, “Direct Fabrication of Two-Dimensional
Titania Arrays using Interference Photolithography,” Appl. Phys. Letts. 79, 3332-3334
(2001).
74. M. Y. Shih, A. Shishido and I. C. Khoo, “All-optical image processing by means of
photosensitive nonlinear liquid crystal film: edge enhancement and image addition/
subtraction,” Opt. Letts. 26, pp 1140-1142 (2001).
75. I. C. Khoo, A. Diaz, M. V. Wood and P. H. Chen , “Passive optical limiting of picosecond –
nanosecond lasers using highly nonlinear organic liquid cored fiber array,” IEEE J.
Selected Topics in Quantum Electronics, Vol. 7, no. 5, pp. 760-768 (2001).
76. Ivan B. Diviliansky, Atsushi Shishido, I. C. Khoo, Theresa S. Mayer, David Pena, Suzushi
Nishimura, and Thomas E. Mallouk, “Fabrication of two-dimensional photonic crystals
using interference lithography and electrodeposition of CdSe,” Appl. Phys. Letts. 79, 3392-
3394 (2001).
77. I. C. Khoo, M. Kaczmarek, M. Y. Shih, M. V. Wood, A. Diaz, J. Ding and Y. Zhang,
“Nonlinear optical effects in nematic liquid crystal films in the 1.55 m spectral region,”
Mol. Cryst. Liq. Cryst. 374, pp. 315-324 (2002).
78. G. Assanto, M. Peccianti, C. Umeton, A. De Luca and I. C. Khoo, “Coherent and incoherent
spatial solitons in bulk nematic liquid crystals,” Mol. Cryst. Liq. Cryst. 375, pp 617-629
(2002).
79. Malgosia Kaczmarek, Min-Yi Shih, Roger S. Cidney and I. C. Khoo, “Electrically tunable,
optically induced dynamic and permanent gratings in dye-doped liquid crystals”, IEEE J.
Quantum Electronics 38, pp 451-457 (2002)
10
80. I. C. Khoo and J. Ding, “All-optical cw laser polarization conversion at 1.55 micron by two
beam coupling in nematic liquid crystal film,” Appl. Phys. Letts. 81, pp. 2496-2498 (2002).
81. I. C. Khoo, J. Ding, Y. Zhang, K. Chen and A. Diaz, “Supra-Nonlinear Photorefractive
Response of Single-wall Carbon Nanotube- and C60-Doped Nematic Liquid Crysta1s,”
Appl. Phys. Letts. 82, pp. 3587-3589 (2003).
82. I.C. Khoo and A. Diaz, “Nonlinear dynamics in laser polarization conversion by stimulated
scattering in nematic liquid crystal films,” Phys. Rev. E68 pp 042701-1 to -4 [2003]
83. I. C. Khoo, K. Chen and A. Diaz, “All-Optical Neural-net like Image Processing with
Photosensitive Nonlinear Nematic Film,” Optics Letts. 28, pp 2372-2374 [2003].
84. I.C. Khoo, Andres Diaz and J. Ding, “Nonlinear-absorbing Fiber Array for Large Dynamic
Range Optical Limiting Application against Intense Short Laser Pulses, J. Opt. Soc. Am
B21, pp. 1234-1240 [2004].
85. Y. Ye, J. Ding, D. Jeong, I. Khoo and Q. Zhang, "Finite-size effect on one-dimensional
coupled resonator optical waveguides" Phys. Rev. E 69, 056604 (2004).
86. Malgosia Kaczmarek, Andrey Dyaduysha, Sergei Slussarenko and I.C. Khoo, “The role of
surface charge field in two-beam coupling in liquid crystal cells with photoconducting
polymer layers,” J. Appl. Phys. 96, pp. 2616-2623 [2004].
87. Iam Choon Khoo, Jianwu Ding, and Andres Diaz, “Dynamics of Cross-polarization
Stimulated Orientation Scattering in Nematic Liquid Crystal Film,” J. Opt. Soc. Am. B
22, pp. 844-851 [2005]
88. I. C. Khoo, Yana Zhang Williams, B. Lewis and T. Mallouk, “Photorefractive CdSe and
gold nanowire-doped liquid crystals and polymer-dispersed-liquid-crystal photonic
crystals,” Mol. Cryst. Liq. Cryst. 446: 233-244 (2005).
89. Jae-Hong Park and Iam Choon Khoo, “Liquid crystal beam steering device with a
photopolymer prism,” Appl. Phys. Letts 87, 091110- 091112 [2005].
90. I. C. Khoo, Kan Chen and Y. Zhang Williams, “Orientational Photorefractive Effect in
undoped and CdSe Nano-Rods doped Nematic Liquid Crystal – Bulk and Interface
Contributions,” IEEE J. Selcted Topics in Quantum Electronics JSTQE 12 (3), pp. 443-450
[2006].
91. E. Graugnard, J. S. King, S. Jain, C. J. Summers, Y. Zhang-Williams and I. C. Khoo,
“Electric field tuning of the Bragg peak in large-pore TiO2 inverse shell opals,” Phys. Rev.
B72, 233105 (2005).
92. I. C. Khoo, Yana Williams, Andres Diaz, Kan Chen, J. Bossard, D. Werner, E. Graugnard
and C. J. Summers, “Liquid-Crystals for optical filters, switches and tunable negative
index material development,” Molecular Crystal Liquid Crystal 453, pp.309-319 (2006).
93. I. C. Khoo, D. H. Werner, X. Liang, A. Diaz and B. Weiner, “Nano-sphere dispersed liquid
crystals for tunable negative-zero-positive index of refraction in the optical and Terahertz
regimes,” Optics Letts. 31, 2592 (2006)
94. D. H. Werner, D-H Kwon, I. C. Khoo, A. K. Kildeshev and V. M. Shalaev, “Liquid
crystalclad near-infrared metamaterials with tunable negative-zero-positive refractive
indices,” Optics Express Vol. 15, No. 6, pp 3342-3347, 2007.
95. I. C. Khoo, Jae-Hong Park and Justin Liou, “All-optical Switching of Continuous Wave
Microseconds Lasers with a Dye-doped Nematic Liquid Crystal,” Appl. Phys. Letts. 90,
151107 (2007).
96. Shoichi Kubo, Andres Diaz, Yan Tang, Theresa S. Mayer, I. C. Khoo and Thomas E.
Mallouk, “Tunability of the refractive index of gold nanoparticle dispersions,” NANO
Letts.7, pp. 3418-3423, (2007)
97. X. Wang, D. H. Kwon, D. H. Werner, I. C. Khoo, A. Kildishev and V. M. Shalaev, ‘Tunable
11
optical negative-index metamaterials employing anisotropic liquid crystals,” Appl. Phys.
Lett. 91, 143122 (2007).
98. I. C. Khoo, A. Diaz, S. Kubo, J. Liou, Mike Stinger, T. Mallouk and J. H. Park, “Nano-
dispersed Organic Liquid and Liquid Crystals for All-Time-Scales Optical Switching and
Tunable Negative- and Zero- Index Materials,” Molecular Crystals Liquid Crystals 485:1,
pp. 934-944 (2008).
99. Bossard, J. A., Liang, X., Li, L., Werner, D. H., Weiner, B., Cristman, P. F., Diaz, A., &
Khoo, I. C. (2008), “Tunable Frequency Selective Surfaces and Negative-Zero-Positive
Index Metamaterials Based on Liquid Crystals,” IEEE Transactions on Antennas and
Propagation, 56, pp. 1308 - 1320 (2008).
100. I. C. Khoo, “Nonlinear Organic Liquid Cored Fiber Array for All- Optical Switching and
Sensor Protection against Short Pulsed Lasers,” IEEE J. Selected Topics in Quantum
Electronics JSTQE 14, no. 3, pp 946 – 951 (2008)
101. I. C. Khoo, J. H. Park, J. D. Liou, “Theory and experimental studies of all-optical
transmission switching in a twist-alignment dye-doped nematic liquid crystal,” J. Opt. Soc.
Am. B25, pp. 1931-1937 (2008)
102. I. C. Khoo, “Nonlinear Optics of Liquid Crystalline Materials,” Physics Report 471, pp.
221-267 [2009].
103. I. C. Khoo, A. Diaz, Justin Liou, D. Werner, J. H. Park, Y. Ma, Junbin Huang, “Liquid
crystal nonlinear optical meta-materials,” Mol. Cryst. Liq. Cryst 502, pp 109 – 120 (2009).
104. Shumin Xiao, Uday K. Chettiar, Alexander V. Kildishev, Vladimir Drachev, I. C. Khoo
and Vladimir M. Shalaev, “Tunable Magnetic Response of Metamaterials,” Appl. Phys.
Lett.Vol. 95 Issue: 3 Article Number: 033115 (2009).
105. I.C. Khoo, S. Webster, S. Kubo, W. J. Youngblood, J. Liou, A. Diaz, T. E. Mallouk, P.
Lin, D. Peceli, L. A. Padilha, D. J. Hagan, and E. W. Van Stryland, "Synthesis and
characterization of the multi-photon absorption and excited-state properties of 4-propyl 4'-
butyl diphenyl acetylene," J. Mater. Chem. 19, 7525-7531 (2009)
106. I. C. Khoo, ‘Nonlinear Optics of Liquid Crystals,” Physics Report 471, pp. 221-267
(2009).
107. I. C. Khoo, A. Diaz, J. Liou, M. V. Stinger, J. Huang and Y. Ma, “Liquid Crystals Tunable
Optical Metamaterials,” IEEE J. Selected Topics in Quantum Electronics, Special Issue
Vol. 99, pp. 1-8 [March 2010]
108. G. Pawlik, M. Jarema, W. Walasik, A. C. Mitus and I. C. Khoo, ‘Field induced
inhomogeneous index distribution of a nano-dispersed nematic liquid crystal near the
Freedericksz transition:Monte carlo studies,” J. Opt. soc. Am. B 27, no. 3 [March 2010]
109. D. N. Christodoulides, I. C. Khoo, G. J. Salamo, G. I. Stegeman, and E. W. Van Stryland,
"Nonlinear refraction and absorption: mechanisms and magnitudes," Adv. Opt. Photon. 2,
60-200 (2010)
110. Yan Jun Liu, Qingzhen Hao, Joseph S. T. Smalley, Justin Liou, Iam Choon Khoo, and
Tony Jun Huang, “A Frequency-Addressed Plasmonic Switch Based on Dual-Frequency
Liquid Crystal,” Appl. Phys. Letts. 97, issue 9, article #: 091101 (2010)
102. Antonio d’Alessandro, Rita Asquini, Marco Trotta, Giovanni Gilardi, Romeo Beccherelli,
and Iam Choon Khoo, "All-optical intensity modulation of near infrared light in a liquid
crystal channel waveguide,” Appl. Phys. Letts. 97, issue 9, article #: 093302 (2010)
103. I. C. Khoo, J. Liou and M. V. Stinger, “Microseconds-Nanoseconds All-Optical Switching
of Visible-Near Infrared (0.5 m-1.55 m) Lasers with Dye-Doped Nematic Liquid Crystals
,” Mole. Cryst. Liq. Cryst. 527, pp. 109-118 (2010).
12
104. A. Diaz and I. C. Khoo, “Liquid crystalline nano-structured optical metamaterials,” in
Comprehensive Nanoscience and Technology, Vol. 3, pages 225-261 eds. David Andrews,
Gregory Scholes and Gary Wiederrecht [Elseier, 2011]
105. I. C. Khoo and A. Diaz, “Multiple-time-scales dynamical studies of nonlinear transmission
of pulsed lasers in a multi-photon absorbing organic material,” J. Opt. Soc. Am – B28
Issue: 7 Pages: 1702-1710 (2011)
106. Tony J. Huang, Y. J. Liu, B. Yue, J. Liou and I. C. Khoo, "All-Optical Modulation of
Localized Surface Plasmon Coupling in a Hybrid System Composed of Photo-Switchable
Gratings and Au Nanodisk Arrays," Journal of Physical Chemistry 115 Issue: 15 Pages:
7717-7722 (2011)
107. I. C. Khoo, J. Liou, M. V. Stinger and S. Zhao, “Ultrafast All-Optical Switching with
Transparent and Absorptive Nematic Liquid Crystals-Implications in Tunable
Metamaterials,” Mol. Cryst. Liq. Cryst. 543 Pages: 151-159 (2011)
108. Pawlik Grzegorz; Walasik Wiktor; Mitus Antoni C and I. C. Khoo, “Large gradients of
refractive index in nanosphere dispersed liquid crystal metamaterial with inhomogeneous
anchoring: Monte Carlo study,” OPTICAL MATERIALS Volume: 33 Issue: 9 Pages:
1459-1463 (2011)
109. Li Jia, Ma Yi; Gu Ying, Q. Gong and I. C. Khoo , “Large spectral tunability of narrow
geometric resonances of periodic arrays of metallic nanoparticles in a nematic liquid
crystal,” Appl. Phys. Letts., 98 Issue: 21 Article Number: 213101 (2011)
110. Zhang Bingxin; Zhao Yanhui; Hao Qingzhen, I. C. Khoo, “Polarization-independent dual-
band infrared perfect absorber based on a metal-dielectric-metal elliptical nanodisk array,”
Opt. Express 19 Pages: 15221-15228 (2011)
111. Smalley Joseph S. T.; Zhao Yanhui; Nawaz Ahmad Ahsan; I. C. Khoo; Tony Huang,
“High contrast modulation of plasmonic signals using nanoscale dual-frequency liquid
crystals,” Opt. Express 19, Pages: 15265-15274 (2011)
112. Hao Qingzhen; Zhao Yanhui; Juluri Bala Krishna, I. C. Khoo and tony Huang,
“Frequency-addressed tunable transmission in optically thin metallic nanohole arrays with
dual-frequency liquid crystals, J. Appl. Phys. Volume: 109 Issue: 8 Article Number:
084340 (2011).
113. I. C. Khoo, “Extreme nonlinear optics of nematic liquid crystals,” J. Opt. Soc. Am. B28,
pp. A45-A55 (2011). Invited paper in Focus Issue dedicated to 50th Anniversary of
Nonlinear Optics.
114. G. Pawlik, K. Tarnowski, W. Walasik, A.C. Mitus and I.C. Khoo, “Infrared cylindrical
cloak in nanosphere dispersed liquid crystal metamaterial ,” Optics Letters 37, pp. 1847-
1849 (2012)
115. Yanhui et al and I. C. Khoo, “Light-driven tunable dual band absorber with liquid-crystal-
plasmonic asymmetric nanodisk array,” Appl. Phys.Letts. Article # 053119 (2012)
116. Grzegorz Pawlik, Wiktor Walasik, Michal Jarema, Antoni C. Mitus, Iam Choon Khoo,
“Temperature dependence of refractive index gradient in nanosphere dispersed liquid
crystal (NDLC) metamaterial at infrared frequencies: Monte Carlo study,” Optical
Materials 34, pp.1656–1659 (2012)
117. I. C. Khoo and T. H. Lin, "Nonlinear optical grating diffraction in dye-doped blue-phase
liquid crystals," Opt. Lett. 37, 3225-3227 (2012)
118. Chun-Wei Chen, Hung-Chang Jau, Chun-Ta Wang, Chun-Hong Lee, I. C. Khoo and
Tsung-Hsien Lin, “Random lasing in blue phase liquid crystals,” Optics Express, Vol. 20,
No. 21 (2012)
13
119. A. Piccardi, A. Alberucci, O. Buchnev, M. Kaczmarek, I. C. Khoo, G. Assanto,
“Frequency-controlled deflection of spatial solitons in nematic liquid crystals,” Appl. Phys.
Letts. 101 Issue: 8 Article Number: 081112 (2012)
120. Rui Luo, Ying Gu, Xiankuo Li, Luojia Wang, Iam-Choon Khoo, and Qihuang Gong,
“Mode recombination and alternation of surface plasmons in anisotropic mediums,” Appl.
Phys. Letts. 102, 011117 (2013)
121. Iam Choon Khoo, Kuan Lung Hong, Shuo Zhao, Ding Ma, and Tsung-Hsien Lin “Blue-
phase liquid crystal cored optical fiber array with photonic bandgaps and nonlinear
transmission properties,” Optics Express Vol. 21 Issue 4, pp.4319-4327 (2013)
122. C. W. Chen, H. C. Jau, C. H. Lee, C. C. Li, C. T. Hou, C. W. Wu, T. H. Lin and I. C.
Khoo, “Temperature dependence of refractive index in blue phase liquid crystals,” Optical
Materials Express 3 Issue: 5 Pages: 527-532 [2013]
123. Joanna Ptasinski, Sung W. Kim, Lin Pang, Iam-Choon Khoo, and Yeshaiahu Fainman,
"Optical tuning of silicon photonic structures with nematic liquid crystal claddings," Optics
Letters Vol. 38, Iss. 12, pp. 2008–2010 (2013).
124. A. Piccardi, A. Alberucci, O. Buchnev, M. Kaczmarek, I. C. Khoo, G. Assanto,
“Frequency-Controlled Routing of Self-Confined Beams in Nematic Liquid Crystals,” Mol.
Cryst. Liq. Cryst. 573 Pages: 26-33 (2013)
125. Liyan Song, Shenhe Fu, Yikun Liu, Jianying Zhou, Vladimir G. Chigrinov, and Iam Choon
Khoo, “Direct femtosecond pulse compression with miniature-sized Bragg cholesteric
liquid crystal,” Optics Letters 38, pp 5040 – 5042 (2013).
126. G. Pawlik, G. Pawlik, W. Walasik, K. Tarnowski, A. C. Mitus, I. C. Khoo, “Liquid crystal
hyperbolic metamaterial for wide-angle negative-positive refraction and reflection,” Optics
Letters, Vol. 39, Issue 7, pp. 1744-1747 (2014)
127. Joanna Ptasinski, Iam-Choon Khoo and Yeshaiahu Fainman, “Passive Temperature
Stabilization of Silicon Photonic Devices Using Liquid Crystals,” Materials, 7(3), pages
2229-2241(2014)
128. I. C. Khoo, “Nonlinear Optics, Active Plasmonic and Tunable Metamaterials with Liquid
Crystals,” Progress in Quantum Electronics, Volume 38, Issue 2, Pages 77–117 (2014)
129. I. C. Khoo and S. Zhao, “Multiple Time Scales Optical Nonlinearities of Liquid Crystals
for Optical-Terahertz-Microwave Applications,” Progress in Electromagnetic Research
PIER, Vol. 147, page 37-56, 2014
130. I. C. Khoo, C. W. Chen, K. L. Hong, and T. H. Lin, and S. Zhao “Nonlinear Optics of
Nematic and Blue Phase Liquid Crystals,” Molecular Crystals Liquid Crystals [ In Press,
2014]
131. Joanna Ptasinski, Iam-Choon Khoo, and Yeshaiahu Fainman, “Enhanced optical tuning of
modified-geometry resonators clad in blue phase liquid crystals,” Optics Letters [In Press,
2014]
------------------------------------------
Conference Presentations (Recent 10 years) *Invited
*1. I. C. Khoo, “Nonlinear molecular photonics and controlled laser transmission through a
nonlinear fiber array,” SPIE European Symposium on Optics and Photonics for Defense
and Security, London, Oct. 2004
2. Kan Chen, Iam-Choon Khoo, “Interface Induced Effect in Liquid Crystal Photorefractive
Nonlinearity”, Frontiers in Optics 2004 (The 88th OSA annual meeting), Rochester, NY,
October 2004.
*3. I. C. Khoo, “Liquid crystals-Photonic crystals” Invited paper. Annual Meeting of the IEEE-
Lasers and Electro Optics Society, Nov. 8, 2004, Puerto Rico
14
4. I. C. Khoo, “All-Optical Self-Polarization Switching via two-wave mixing in nematic Liquid
Crystals – from visible to infrared,” Annual Meeting of the IEEE-Lasers and Electro
Optics Society, Nov. 11, 2004, Puerto Rico.
*5. I. C. Khoo, “Holographic fabrication of polymer dispersed liquid crystal photonic crystals,”
Invited paper, Materials Research Society Fall Meeting, Boston, Dec. 2, 2004
*6. I. C. Khoo, “Liquid Crystals Ultra Broadband All-Optical Devices”, 8th
Int. Conference on
Frontiers of Polymers and Advanced Materials, Cancun, Mexico April 23-28, 2005.
*7. I. C. Khoo, “Fundamentals and Applications of Ultra-Broadband Liquid-Crystal All-Optical
and Electro-Optical Properties and Processes,” Int. Conference on Photonics, Biophotonics
and Nanophotonics, Nanjing, China May 14-19, 2005.
*8. I. C. Khoo, “Electro- and Nonlinear –optical Properties of Liquid Crystals,”, 7th
Int.
Topical Meeting on Novel Optical Materials and Applications,” Cetraro, Italy. May 29 –
June 4, 2005.
9. Andres Diaz, J. Ding, Kan Chen and I. C. Khoo, “Nonlinear dynamics of stimulated cross-
polarization scattering in a nematic liquid-crystal film,” in 7th
Int. Topical Meeting on
Novel Optical Materials and Applications,” Cetraro, Italy. 6/2005.
10. Yana Williams, Kan Chen, Jay Hong Park, I. C. Khoo, B. Lewis and T. Mallouk,
“Photorefractive effect in semiconductor nanorod doped liquid crystal,” 7th
Int. Topical
Meeting on Novel Optical Materials and Applications,” Cetraro, Italy. 6/2005.
11. Y. Zhang-williams, K. Chen, J. H. Park, J. Ding, A. Diaz and I. C. Khoo, “Nonlinear and
Tunable photonic crystals with nano-particulate doped polymer dispersed liquid crystals,”
In Liquid Crystal Conference IX - SPIE Symposium on Optics and Photonics, San Diego,
California 8/2005. Proceeding Vol. 5936
12. Kan Chen, Y. Zhang-Williams, J. H. Park, A. Diaz and I. C. Khoo, “Light induced
photorefractive effect threshold lowering in pure nematic liquid crystal cells,” In Liquid
Crystal Conference IX - SPIE Symposium on Optics and Photonics, San Diego, California
8/2005. Proceeding Vol. 5936.
*13. E. Graugnard, J. S. King, D. Gaillot, C. J. Summers, Y. Zhang-williams and I. C. Khoo,
“Liquid crystal infiltration of template patterned 3-D photonic crystals,” Invited Paper in
Conference on Tuning the Optical Response of Photonic Bandgap Structures II – SPIE
Symposiumon Optics and Photonics, San Diego, California, 8/2005.
14. I. C. Khoo, Jay Hong Park, Yana Z. Williams, Kan Chen and Andres Diaz, “Liquid Crystals
for switching, frequency filters and tunable negative index material development”, in
Optics of Liquid Crystals conference,” Clearwater, Florida, 10/2005.
15. Jae Hong Park and I. C. Khoo, I. C. Khoo, “Liquid crystal beam steering device with a
photopolymer prism ,” in Optics of Liquid Crystals conference,” Clearwater, Florida
10/2005.
*16. I. C. Khoo and A. Diaz, “Self-action cw-pulsed lasers and glares attenuators,” Invited
paper, IEEE-Lasers and Electro-Optics Society Annual Meeting, Sydney, Australia
[10/2005].
17. Scott Webster, Frank C. McDonald, Lazaro Padilha, Raz Gvishi, Tarik H. McMillian,
David Hagan, and Eric W. Van Stryland, Xumu Zhang, A. Diaz, and Iam C. Khoo,
“Nanosecond to Femtosecond Characterization of Nonlinear Absorption in Three Similar
Organic Liquids,” Presented at the Optics in South East OISE, SPIE. Atlanta, Georgia
10/2005.
19. Elton Graugnard, Davy P. Gaillot, Jeffrey S. King, Swati Jain, Yana Zhang-Williams, Iam-
Choon Khoo and Christopher J. Summers, “Tuning the optical properties of colloidal thin
15
films using dual-frequency liquid crystal,” Spring Material Research Society Meeting, San
Francesco, April 17-21, 2006.
*20. I. C. Khoo, A. Diaz and Mike Stinger, “Nonlinear Transmission of a Neat Liquid with
Two-Photon and Excited State Absorption”, Invited paper, ISOPL [Int. Symposium on
Optical Power Limiting,” June 27-29, 2006, Dingle, Ireland.
21. J. A. Bossard, L. Li, D. H. Werner, I. C. Khoo, "Infrared Liquid Crystal Tunable Frequency
Selective Surfaces," Proceedings of the 2006 IEEE Antennas and Propagation Society
International Symposium with USNC/URSI National Radio Science and AMEREM
Meetings, Albuquerque, NM, pp 4489-4492, July 9-14, 2006.
*22. I. C. Khoo, “Effect of excited state and population regeneration in the nonlinear
transmission through a multiphoton absorbing organic liquid,” Conference on Nonlinear
Transmission and Multi-Photon Processes - SPIE Annual International Symposium on
Optical Sciences and Technology, San Diego, CA August 13-18 2006.
23. I. C. Khoo, A. Diaz, J. Bossard and D. Werner, “Liquid crystal cladded metallo-dielectric
and all-dielectric frequency selective surfaces for broadband tunable optical filters and
planar negative index optics,” Liquid Crystal Conference X- SPIE Annual International
Symposium on Optical Sciences and Technology, San Diego, CA August 13-18 2006.
24. I. Khoo, J. D. Liou, K. X. Chen, “Enhanced photorefractivity of CdSe nanorods doped
nematic liquid crystals,” Liquid Crystal Conference X- SPIE Annual International
Symposium on Optical Sciences and Technology, San Diego, CA August 13-18 2006.
*25. C. J. Summers, E. Graugnard, D. P. Gaillot, Y. Z. Williams, I. C. Khoo, “Tunable 3D
photonic crystals by liquid crystal infiltration,” Liquid Crystal Conference X- SPIE Annual
International Symposium on Optical Sciences and Technology, San Diego, CA August 13-
18 2006.
*26. I. C. Khoo, Invited Plenary Lecture on “Nano-Dispersed Liquid Crystalline Structures for
Tunable Negative-, Zero-, and Positive Index Materials in the Optical-Terahertz Regimes”.
International Symposium on Bio-Photonics, Nano-Photonics and Metamaterials,
Hangzhou, China Oct. 16-19, 2006.
*27. I. C. Khoo, Invited Keynote Presentation. “Low loss reconfigurable metallo-dielectric and
all-dielectric frequency selective surfaces and metamaterials for optical filters and
switching applications”. International Symposium on Bio-Photonics, Nano-Photonics and
Metamaterials, Hangzhou, China Oct. 16-19, 2006.
*28. I. C. Khoo, D. Werner and A. Diaz, Invited paper. “Nano-spheres dispersed liquid crystal
supra-nonlinear negative-zero-positive index metamaterials” Conference on Organic
Photonic Materials and Devices IX – Photonic West 2007, San Jose, CA 1/2007.
*29. I. C. Khoo and A. Diaz, Invited Paper “Liquid crystal frequency selective surfaces for
tunable negative-zero index optical materials and devices” Conference on Emerging Liquid
Crystal Technologies – Photonic West 2007, San Jose, CA 1/2007.
*30. I. C. Khoo. Invited Plenary Presentation, “Liquid Crystalline Metamaterials with Low-
Loss Tunable Negative-Zero-Positive Refractive Index in the Terahertz –Optical Region,”
SPIE Europe - International Congress on Optics and Optoelectronics 16 - 20 April 2007
Prague, Czech Republic
*31. I. C. Khoo, Invited Seminar, “Liquid Crystalline Metamaterials and Nonlinear Optics,”
Purdue University Nanotechnology Center, May 1, 2007
32. I. C. Khoo, "Liquid crystals tunable meta-materials with negative - zero – positive refractive
indices," Conference on Lasers and electro-Optics, Baltimore, May 2007
16
*33. I. C. Khoo, Invited Paper, “Nonlinear tunable liquid crystalline materials with negative-,
zero- and positive refractive index,” in 8th
Mediterranean Topical Meeting on Novel
Optical Materials and Applications, Cetraro, Italy, June 8-13, 2007.
*34. I. C. Khoo, Invited Plenary Presentation, “Nano-dispersed Organic Liquid and Liquid
Crystals for All-Time-Scales Optical Switching and Tunable Negative- and Zero- Index
Materials,” at the 9th
International Conference on Frontiers of Polymers and Advanced
Materials,” “ Krakow, Poland 7/8 – 7/13, 2007
35. I. C. Khoo, A. Diaz, J. Liou, J. H. Park, M. Stinger, “Nanosecond – cw Visible-IR All
Optical Switching and Nonlinear Transmission with a Nonlinear Organic Optical Liquid in
Bulk and Guided Wave Geometry,” IEEE-LEOS 2007 Summer Topical Meeting on
Organic Photonic Media, Devices and Applications, Portland, 7/23 -25, 2007.
36. Michael V. Stinger, Andres Diaz, Justin D. Liou, Iam-Choon Khoo, "Dynamic polarization
switching and stimulated orientational scattering in nematic liquid crystals", SPIE
Symposium on Optics and Photonics, Liquid Crystals XI, Proceeding Vol. 6654. San
Diego, 26-28 August, 2007.
37. J. D. Liou, J. H. Park, M. V. Stinger, A. Diaz, J. Huang and I. C. Khoo "Nonlinear dye-
doped liquid crystal for fast and broadband CW and long-pulse laser power control and
switching", SPIE Symposium on Optics and Photonics, Liquid Crystals XI, Vol. 6654, San
Diego, 26-28 August, 2007.
38. Andres Diaz, S. Kubo, Y. Tang, Justin D. Liou, T. S. Mayer, Iam-Choon Khoo and T. E.
Mallouk, "Tunable refractive index materials with metallic nano-spheres dispersed in
organic liquids", SPIE Symposium on Optics and Photonics, Liquid Crystals XI, Vol.
6654, San Diego, 26-28 August, 2007.
*39. I. C. Khoo, A. Diaz, J. Liou, J. H. Park, M. Stinger, S. Kubo, T. Mallouk, "Nanosecond-cw
visible-IR all-optical switching and nonlinear transmission with nonlinear organic optical
liquids and liquid crystals", Invited paper. SPIE Symposium on Optics and Photonics,
Liquid Crystals XI, Vol. 6654, San Diego, 26-28 August, 2007.
40. I. C. Khoo, “Liquid crystal supra-nonlinear optical meta-materials,” Nonlinear Optics,
Hawaii, 8/2007.
*41. I. C. Khoo, “Supra-nonlinear nano-dispersed liquid crystalline negative and zero- index
optical meta-materials,” Invited paper, 12th
Int. Topical Meeting on Optics of Liquid
Crystals,” Puebla, Mexico, Oct. 1-5, 2007.
*42. I. C. Khoo, “Liquid Crystals,” Selected Fall Seminar Series, PRISM, Princeton University,
Princeton, October 10, 2007.
43. Liang, X., Weiner, B., Werner, D. H., & Khoo, I. C. (2007). Nano-dispersed liquid crystal
tunable negative-zero-positive index metamaterials. Proceedings of the 2007 IEEE
Antennas and Propagation Society International Symposium, Honolulu, HI 3408-3411.
44. Kwon, D.-H., Werner, D. H., Khoo, I.-C., Kildishev, A. V., & Shalaev, V. M. (2007).
Liquid crystal clad metamaterial with a tunable negative-zero-positive index of refraction.
Proceedings of the 2007 IEEE Antennas and Propagation Society International
Symposium, Honolulu, HI, 2881-2884.
*45. I. C. Khoo and A. Diaz, Invited Presentation, “Liquid crystalline optical metamaterials,”
IEEE-LEOS Winter Topical, Sorrento, Italy 1/2008
46. Shoichi Kubo, Justin Youngblood, Justin Liou, Iam-choon Khoo, Thomas E. Mallouk,
“Optical Properties of Non-Linear Liquid 4-propyl 4'-butyl diphenylacetylene,” The 55th
annual meeting of the Japan Society of Applied Physics, Nihon University, Funabashi
(Japan), March 27-30, 2008
17
*47. I. C. Khoo, “Liquid Crystal Metamaterials,” Electrical and Electronics Department
Seminar, University of Pavia, Italy March 13, 2008
*48. I. C. Khoo, “Liquid Crystal Metamaterials,” Physics Department Seminar, University of
Calabria, Italy March 11, 2008
*49. I. C. Khoo, “Liquids and Liquid Crystalline Metamaterials,” College of Engineering
Seminar , EPFL, Lausanne, Switzerland, March 17, 2008
50. I. C. Khoo, “Liquid Crystals Nano-structures and meta-materials,” – Invited Seminar – OSA
Nano-Photonics, Nanjing, China, May 26-29, 2008
*51. I. C. Khoo, “Liquid Crystal Optical Meta-materials,” Electrical and Electronics
Department, University of Rome, Italy June 10, 2008.
*52. I. C. Khoo, “Liquid Crystal and Liquid Nonlinear Optical Metamaterials,” Invited Paper
- Italian LC Society – Sicily, Italy June 4-7, 2008
*53. I. C. Khoo, “Liquid crystal nonlinear optical meta-materials,” Invited Keynote Plenary
Presentation - 2nd
Int. Workshop on Liquid Crystals for Photonics,” July 21-23 Cambridge
University, Cambridge, UK (2008)
54. Andres Diaz, Yi Ma, Junbin Huang, J. Liou, J. H. Park and I. C. Khoo, "Refractive index
engineering of liquid crystals with nano-particulates,"Liquid Crystal XII, SPIE Optics and
Photonics Symposium, San Diego, CA 8/2008
55. Mike V. Stinger, Justin Liou, Andres Diaz, Yi Ma, Junbin Huang, J. H. Park and I. C. Khoo,
"Nonlinear all-optical switching with organic liquid and liquid crystals in the visible-
infrared regime,"Liquid Crystal XII, SPIE Optics and Photonics Symposium, San Diego,
CA 8/2008
56. J. D. Liou, A. Diaz, Y. Ma, J. Huang, J.H. Park, I. C. Khoo, "Investigation of field-induced
refractive index changes in nanometer thin nematic liquid crystals," Liquid Crystal XII,
SPIE Optics and Photonics Symposium, San Diego, CA 8/2008
*57. I. C. Khoo, “Reconfigurable/Tunable Negative-Zero (and Low or novel) Index Optical
Metamaterials,” Invited Plenary Presentation, Int. School of Liquid Crystals, Erice, Italy.
10/27 – 11/1, 2008
*58. I. C. Khoo, “Liquid Crystal Optical Metamaterials,” Invited Seminar, College of Science,
National Cheng Kung University, Tainan, Taiwan, May 19, 2009.
*59. I. C. Khoo, “All-optical Nonlinear Transmission Control - Materials and Devices
Development for Multiple Time-Scales and Spectral-Bands Application,” Invited Keynote
Lecture, International Symposium on Materials and Devices for Nonlinear Optics, Isle
Proquerolles, France on June 26 – July 1, 2009.
*60. I. C. Khoo, Justin Liou , A. Diaz, J. Huang, Y. Ma, M. Stinger, W. Justin Youngblood,
Thomas E. Mallouk and Ping Lin, “Liquid Crystalline Optical Meta-Materials with
Extraordinary Performance Characteristics,” Invited Paper in International topical Meeting
on Novel Optical Materials and Applications, Cetraro, Italy June 7-13, 2009.
61. Iam-Choon Khoo, Justin Liou , A. Diaz, J. Huang, Y. Ma, M. Stinger, “Nonlinear Organic
Materials for Multiple-time-Scale Very Broadband Passive Optical Switching,” SPIE
Symposium in Optics and Photonics Liquid Crystal conference XIII, San Diego, August
2009
*62. I. C. Khoo, “Multiple time scale characterization of the nonlinear multi-photon absorption
characteristics of a neat organic liquid,” Invited Paper - SPIE Symposium in Optics and
Photonics Liquid Crystal conference XIII, San Diego, August 2009
*63. I. C. Khoo, “Nonlinear Optics of Liquid Crystals,” Invited Keynote Plenary Paper –
International Topical Meeting on Optics of Liquid Crystals, Erice, Italy Sept. 30, 2009.
18
*64. I. C. Khoo, “Liquid Crystals for Very Broadband Optical Applications,” Invited Paper in
Int. Symposium on Trends in Novel Materials for Photonics, Delphi, Greece Oct. 7, 2009
*65. I. C. Khoo, “Liquid Crystals for Tunable Optical Metamaterials -Electro-Optics and
Nonlinear Optics,” Invited Paper - Material Research Society Meeting, Boston December
2, 2009.
*66. A. C. Mitus, M. Jarema, W. Walasik and G. Pawlik, and I. C. Khoo, “Inhomogeneous
Tunable Nanosphere Dispersed Liquid Crystal Metamaterial: Monte Carlo Studies,”
Invited Paper – International Conference on Optically Nonlinear Organics,”
ICOPE/ICONO11, Beijing, China Sept. 20-25, 2009.
*67. I. C. Khoo, “Liquid crystal tunable metamaterials,” Invited Paper in SPIE European
Symposium on Optics and Photonics, Brussel, Belgium, April 14-16, 2010
*68. I. C. Khoo, “Nematic liquid crystals for ultrafast all-optical tuning and switching of
metamaterials over the visible-infrared spectral regime,” Invited Paper – International
Liquid Crystal Conference, Krakow, Poland, 7/11-7/16, 2010.
*69. Antoni C. Mitus, Grzegorz Pawlik, Wiktor T. Walasik, and Iam Choon Khoo, “Field,
temperature, and anchoring induced inhomogeneous index distribution of a nano-dispersed
nematic liquid crystal near the Freedericksz transition: Monte Carlo studies ,” Invited
paper in SPIE Optics and Photonics, Liquid Crystals XIV, (8/1-8/2, 2010), San Diego, CA.
*70. G. Pawlik; M. Jarema; W. Walasik; A. C. Mitus and I. C. Khoo, “ Modulation of refractive
index caused by amplitude variation and heterogeneity of anchoring forces in nanosphere-
doped liquid crystal metamaterial: Monte Carlo analysis,” in Metamaterials V- SPIE
Europe (April, 2010), Brussel, Belgium.
71. Iam Choon Khoo, Justin Liou, Michael V. Stinger, “Ultrafast switching of nematic liquid
crystal birefringence” in SPIE Optics and Photonics, Liquid Crystals XIV (Conference
7775), 8/1-8/2, 2010, San Diego, CA.
*72. I. C. Khoo, Invited Keynote Paper, “Multiple-Time-Scales Dynamical Studies of Multi-
Photon Nonlinear Absorbers for Passive All-Optical Sensor Protection, European
Symposium on Security and Defense, Toulouse, France Sept. 20-23 (2010).
*73. I. C. Khoo, Invited Paper “Broadband Nonlinear Electro-optical Responses of Nematic
Liquid Crystals for Ultrafast Optical Switching and Image Processing Applications” in
Material Research Society Meeting- Symposium on Liquid-Crystal Materials--Beyond
Displays, Boston, Nov. 28-Dec. 3, 2010
*74. I. C. Khoo, Invited Paper “Ultrafast all-optical switching with transparent and absorptive
nematic liquid crystals – implications in tunable metamaterials and nanostructures,” in
Workshops on Liquid Crystals for Photonics 2010, Hong Kong, Dec. 5-8, 2010
*75. I. C. Khoo, Invited Presentation, “Liquid Crystals Nonlinear Optics
CW to Femtoseconds All- Optical Signal Processing,” Conference on Lasers and Electro-
Optics, Balitmore, 5/2011
*76. I. C. Khoo, Invited Plenary Presentation, “Liquid-Crystals-Plasmonic Metamaterials for
High Speed All-Optical Processing” in International Metamaterials Workshop, Hangzhou,
China, 4/2011
*77. I. C. Khoo, Invited Talk, “Liquid-crystals-plasmonic optical materials for high speed
electro- and nonlinear-optics,” 10th
Mediterranean School and International Topical
Meeting on Novel Optical Materials and Applications’, Cetraro, Italy 6/2011.
*78. I. C. Khoo, Two Invited Lectures: (1) Review of Electronics and non-electronics optical
nonlinearities of liquid crystals; (2) Liquid-crystals-plasmonic metamaterials for advanced
optical processing, in Advanced School on Liquid crystals Photonics, Erice, Sicily, Italy
7/11
19
*79. Grzegorz Pawlik, Wlodzimierz Salejda, Karol Tarnowski, Wiktor T. Walasik, Antoni C.
Mitus and I. C. Khoo, Invited Paper, “Toward cloaking in nanosphere dispersed liquid
crystal (NDLC), 2011 SPIE Optics and Photnics Symposium – Liquid Crystals Conference
XV, San Diego, 8/2011
80. Kuan-Lun Hong, Shuo Zhao, Iam Choon Khoo, “Broadband ultrafast all-optical processing
with nematic liquid crystals,”2011 SPIE Optics and Photnics Symposium – Liquid Crystals
Conference XV, San Diego, 8/2011
81. Iam Choon Khoo, Junbin Huang, Yi Ma, “Plasmonics-enhanced optical fi elds and
nonlinearities in liquid crystals,” 2011 SPIE Optics and Photnics Symposium – Liquid
Crystals Conference XV, San Diego, 8/2011
*82. I. C. Khoo, Invited Keynote Lecture, “Plasmonic-liquid-crystals for advanced electro- and
nonlinear-optics,” International Workshop on Nano- and Bio-Photonics [IWNBP], Lyon,
France, Oct. 23th
-28th
, 2011
*83. I. C. Khoo, “Liquid Crystals-Plasmonic – Route to Next Generation Electro- and
Nonlinear- Optics,” Invited Paper, 1st International Conference on Advanced Photonic
Polymers – Reconstruction of Japan from 3.11 Tragedy by “Photonic Innovation”, Dec. 1-
2, 2011, Yokohama, Japan.
*84. I. C. Khoo, S. Zhao, Yi Ma and K. L. Hong “Liquid crystals with embedded plasmonic
particulates and nanostructures”, Invited Plenary Paper – Symposium on Liquid Crystal
Photonics, Guilin, China 3-23-3-27, 2012
*85. I. C. Khoo, “Stimulated cross-polarization scattering and nonlinear dynamics in nematic
liquid crystals,” Invited Keynote paper – Nonlinear Guided Waves VI –Santiago de
Compostella, Spain, May 7-9, 2012
*86. I. C. Khoo, “Active and Tunable Metamaterials” – Invited talk, AFOSR Workshop on
Metamaterials, Army Research Laboratory, Adelphi, Maryland, March 2nd
, 2012
*87. I. C. Khoo, “Active Metamaterials with liquid-crystals-plasmonics,” Invited Talk,
META2012 Conference, Paris, France, April 19-22, 2012
*88. I. C. Khoo, S. Zhao, Yi Ma, K. L. Hong, “Plasmonic liquid crystals for advanced electro-
and nonlinear- optics,” CIMTEC – Smart Materials and Devices Conference, Montecatini
Terme, Italy, June 11-15, 2012
89. G. Pawlik, W. Walasik, M. Jarema, A. Mitus and I. C. Khoo, “Cylindrical cloak design in
layered nanosphere dispersed liquid crystal metamaterial,” SPIE Conference on
Metamaterials VII Brussels, BELGIUM. APR 16-19, 2012. Proceedings of SPIE Volume:
8423 Article Number: Published: 2012
90. S. Zhao, K.-L. Hong, Yi Ma, and I. C. Khoo, “Nonlinear optical Kerr effects in dye-doped
cholesteric blue-phase liquid crystals,” SPIE Liquid Crystals Conference XVI, San Diego,
8/2012.
*91. Yanhui Zhao, S. Zhao, K.-L. Hong, Yi Ma, Tony Huang and I. C. Khoo, “Recent studies
of active liquid-crystal-plasmonics nanostructures,” SPIE Liquid Crystals Conference XVI,
San Diego, 8/2012
*92. G. Pawlik, W. Walasik, M. Jarema, A. Mitus and I. C. Khoo, “Optimization of cloak effect
in nanosphere dispersed liquid crystal metamaterial,” SPIE Liquid Crystals Conference
XVI, San Diego, 8/2012.
*93. I. C. Khoo, “Blue-Phase Liquid Crystalline Photonic Materials and Nanostructures,”
Invited Keynote Presentation, Third International Workshop on Advanced Nano- and
Biomaterials and Their Device Applications, organized jointly with French-Romanian
Topical Meeting on Nano and Biomaterials, Timisoara (Romania), September 19-23, 2012
20
*94. I. C. Khoo, “Liquid Crystals Photonics”, University Distinguished Lecturer Series at the
University of Alabama, Huntsville. October 26, 2012
*95. I. C. Khoo, “Plasmonic- and Blue-Phase Liquid Crystalline Photonics Materials” Invited
Talk. ACP - Asia Communications and Photonics Conference. 7-10 November, 2012,
Guangzhou (Canton), China.
*96. I. C. Khoo, “Nonlinear Optical Kerr Effects and Active Nanostructures with Blue Phase
Liquid Crystals” Invited Speaker in International Workshop on Liquid Crystal Photonics
II. December 9 -12, Hong Kong. Student co-authors: K. L. Hong, S. Zhao
*97. I. C. Khoo, “Plasmonic and Blue Phase Liquid Crystalline Materials/Nanostructures,”
Invited Presentation in “Photonics Global Conference (PGC 2012)” December 13-17,
Singapore. Student co-authors: K. L. Hong, S. Zhao and Yi Ma.
*98. I. C. Khoo, Plenary Speaker “Photonics of Liquid Crystalline Materials/Nanostructures,”
Taiwan National Liquid Crystal Society Annual Meeting. December 22, Kaohsiung,
Taiwan
*99. I. C. Khoo, Plenary Speaker “Nonlinear Optics of Blue Phase Liquid Crystals,” Invited
Plenary speaker in Symposium on Liquid Crystals Photonics 2013, Chengdu, China April
20 -2 5, 2013.
*100. I. C. Khoo, “Liquid Crystals Nonlinear Photonics”, Invited speaker in Novel Optical
Materials and Applications, Cetraro, Italy June 9-15, 2013.
*101. I. C. Khoo, “Nonlinear Optics with Blue Phase Liquid Crystals,” International
Symposium on Modern Optics and Its Applications, Bandung, Indonesia June 24-27, 2013
*102. I. C. Khoo, “Liquid Crystals Photonics,” Joint Colloquium – Electrical Engineering and
Physics Departments, University of Malaya, Kuala Lumpur, Malaysia June 21, 2013.
103. Shuo Zha, K. L. Hong and I. C. Khoo, “Ultrafast optical nonlinearities of liquid crystals
for all-optical switching” SPIE Liquid Crystals Conference XVI1, San Diego, 8/2013
104. G. Pawlik, W. Walasik, K. Tarnowski, A. Mitus and I. C. Khoo, “Negative refraction for
TM polarization in nanosphere dispersed liquid crystal (NDLC) metamaterial” SPIE
Liquid Crystals Conference XVI1, San Diego, 8/2013.
105. J. Ptasinski, S. W. Kim, L. Pang, I. C. Khoo, and Y. Fainman, “Active electrical and
optical tuning of silicon photonic devices with liquid crystals,” SPIE Liquid Crystals
Conference XVI1, San Diego, 8/2013
*106. Y. Gu, R. Luo, Q. Gong, and I. C. Khoo, “Mode recombination and surface plasmons
modes transformation in anisotropic mediums” SPIE Liquid Crystals Conference XVI1,
San Diego, 8/2013.
*107. I. C. Khoo, “Nonlinear Optics of Liquid Crystals Visible – THz – and Beyond” Keynote
Presentation in Progress In Electromagnetics Research Symposium PIERS 2013,
Stockholm, Sweden, 12-15 August, 2013.
*108. I. C. Khoo, C,-W. Chen, K. L. Hong, T.H. Lin, and Shuo Zhao, “Nonlinear Optics of
Nematic and Blue Phase Liquid Crystals,” Invited paper in Optics of Liquid Crystals
Conference, Hawaii, 9/29-10/4, 2013
*109. I. C. Khoo, “Blue-Phase Liquid Crystals for Multifunctional All-Optical Photonics,”
Invited Paper in 2nd International Workshop on Nano and Bio-Photonics (IWNBP2013),
Biarritz, France Nov. 3-8, 2013
110. G. Pawlik, W. Walasik, K. Tarnowski, A. C. Mitus, I. C. Khoo, “k-vector angular
correlations in negative refraction for TM polarization in nanosphere dispersed liquid
crystal (NDLC) metamaterial,” Conference on Optics and Photonics for Counterterrorism,
Crime Fighting and Defence IX; and Optical Materials and Biomaterials in Security and
Defence Systems Technology X,” Dresden, Germany September 23-25 (2013)
21
111. Joanna N. Ptasinski, W. Kim, Lin Pang, Iam-Choon Khoo, and Yeshaiahu Fainman,
“Optical tuning of nematic liquid crystal claddings for chip scale photonic circuits,” 2013
IEEE AVFOP (Avionics, Fiber-optics and photonics technology conference), San Diego,
CA 10/1 – 10/3(2013).
*112. I. C. Khoo, “Ultrafast nonlinear optics, tunable plasmonics and metamaterials,” Invited
Keynote Presentation in Liquid Crystals Photonics, Shanghai, China April 19-23 (2014)
*113. I. C. Khoo, “Ultrafast Nonlinear Optics, Tunable Metamaterials and Active Plasmonics
with Liquid Crystals,” Invited Presentation in Display Week, Society for Information
Display, San Diego June 2 – 5 (2014)
*114. Grzegorz Pawlik, Wiktor Walasik, Karol Tarnowski, Antoni C. Mitus, Iam-Choon Khoo,
“Liquid crystal hyperbolic metamaterial for wide-angle negative-positive refraction and
reflection,” SPIE Liquid Crystals Conference XVIII, San Diego, 8/2014
115. Shuo Zhao and IamChoon Khoo, “Ultrafast all-optical switching with transparent liquid
crystals,” SPIE Liquid Crystals Conference XVIII, San Diego, 8/2014
116 Nan Wang, Shaowei Wang, Iam-Choon Khoo and Sailing He, “Self-assembly of Gold
Nanorods in Liquid Crystals Confined in a Curved Space and Electric Field for the
Application of Optical Cloaking,” Progress in Electromagnetic Research (PIERS 2014),
Guangzhou, China 8/2014.
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