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Collective resonances in plasmonic crystalsJaime Gómez Rivaswww.plasmonics.eup
www.amolf.nl
ContentsSingle plasmonic antennas: light emissionPl i l fPlasmonic crystals of antennas: emission and sensingg
Ackowledgements
Gabriele VecchiJose A. Sánchez Gil Peter Offermans
Mercedes CregoVincenzo GianniniOtto MuskensM tij S h f
Mercedes CregoSywert Brongersma
Martijn SchaafsmaSaid R. Rodriguez
Microphotonic Light SourcesMicrophotonic Light Sources
Localized plasmon resonancespMetal nanoparticle (L<<): resonant response dominated by material by material
+ +
)(22
4 3
m
ma
Nanoantenna (L): resonant response determined by
‐ ‐ )(2 spm
Nanoantenna (L): resonant response determined by material and geometry
+ +
‐ ‐
Dimers: near‐field couplingL
+ +‐‐
+ +‐‐
+ + ‐‐
Atto 680 in PVB
O.L. Muskens… JGR, Opt. Express (2007)
Dimer antennas: emissionPhotoluminescence enhancementL = 80 nm nm = 730 nmL = 80 nm, nm SPR em = 730 nm
1 m
O.L. Muskens… JGR, Nano Letters (2007)
Dimer antennas: emissionFluorescence decay
1 2N t t
1. 2.1.
2.
Next to antenna
0.
12At antenna
• Fivefold enhancement of 2 with respect to 0• 1 = 0
Dimer antennas: emissionDipole radiating at 730 nm
emen
te en
hanc
Antenna length (nm)
Rat
Antenna length (nm)
Improvement of quantum efficiency
Giannini, …JGR, Sanchez Gil, JOSA B (2009)
Arrays of particles: Far‐field coupling
1.0Localized SP
(±1,0) Rayleigh anomaly
ancePol
0.5
ansm
itt Surface latticeresonance
0 0
Tra
W= 85 nm, L= 415 nmax = 500 nm, ay = 300 nm
600 800 10000.0
Wavelength (nm)Wavelength (nm)Quartz
Arrays of particles: historyCarron et al. (JOSA B, 1986) Schatz et al. (J. Chem Phys, 2004)Kravets et al. (PRL 2008), Crozier et al. (APL 2008), Kravets et al. (PRL 2008), Crozier et al. (APL 2008), Barnes et al. (PRL 2008), Vecchi at al. (PRL 2009)
Surface lattice resonances
0 012(1,0)(‐2,0)
0 010
0.012
nm-1)
0 008
0.010
(rad
n
ce10.008
/
c
Tran
smitt
anc
0
0.5
1
(‐1,0)
0.004 0.008 k// (rad nm-1)
0
//
Vecchi … JGR, Phys. Rev. B (2009)
Emission
Transmission vs. angle incidenceEmission vs. angle emission
30
40
cem
ent
n (d
eg)
57
30
40
0 5
1
ce (d
eg)
mita
nce
20
enha
nanc
fem
issi
o
135
20 0
0.5
inci
denc
Tran
sm
700 8000
10
PL
e
Ang
le o
f
0
10
Angl
e of
700 800A
Wavelength (nm)700 800
0A
Wavelength (nm)
Enhanced and directional emission
Vecchi … JGR, Phys. Rev. Lett. (2009) and (2010)
Surface lattice resonance sensor
90
n = 0.04290
e (%
)
nF M /60
tanc
e
FoM = 1.4 FoM
30
nsm
itt
F M 25
600 700 800 9000Tr
an FoM = 25
600 700 800 900
Wavelength (nm)
Universal scaling of FoM
Offermans,…, JGR, ACS‐Nano (2011)
Universal scaling of FoM
Offermans,…, JGR, ACS‐Nano (2011)
ConclusionsConclusionsDemonstrated enhanced emission of dye moleculesfrom single nanoantennas
The enhancement of the emission can be improvedby collective resonances in periodic arrays of antennas
These collective resonances improve the FoM of plasmonic refractive index sensors