8/7/2019 Laser tables

1/3

Sec.8-1 181asers and Interaction

TABLE 8-2 LASER TYPES IN MEDICINE

Wavelengthaser type

ExcimerArgon fluorideKrypton fluoride

Power levels

Pulsed, = I Jlcm2 withpulsewidth or about10 ns (= 108 Wlcm2)

UsesJ

Cutting, incising,ablative

photodecomposition

(ophthalmology,cardiology, and

arthroscopy)

Photocoagulation,

welding,

vaporization

(dennatology,

ophthalmology,

geneml surgery)

--

193 n m (ultraviolet; invisible)

248 n m (ultraviolet; invisible)

Argon-ion 488 n m (blue-green; yisible) Continuous; up to 10 W

Tunable dye(pumped withan argon-ionlaser)

631 n m (red; visible) Continuous; 3-4 W Photoactivation(treatment or tumo~)

Nd:YAG .06 Jlm (infrared; visible) Conlinuous; up lo

maximum of60-100 W

Photocoagulation,

vaporization,perforation

(ophthalmology,

gastroenterology,

dermatology,urology, and

tumors)

Carbon dioxide

(CO2)

10.6 /lm (infrared; visible) Continuous; up to 80 W Tissue vaporization,incision, excision

(dennatology,

gynecology,

gastroenterology,and neurosurgery)

invisible laser energy in the deep ultraviolet. The Nd : y AG and CO2 lasers ernit laser

8/7/2019 Laser tables

2/3

Sec.8-1 Lasers and Interaction 183

TABlE 8-3 MEDICAL FIELDS INVOLVED WITH LASERS

Ophthalmology

Gynecology

Dennatology

Cardiology

Gastroenterology

Oncology

Cun'ent fields of practice

eyesfemale reproductive organsskinheart and blood vesselsintestines

tumors/cel1s

NeurosurgeryOtolaryngologyPodiatryUrologyDentistry

Future fields of practice

nervesears and throatfeeturinary tractteeth

scientists sought to emulate the sun's mechanism of producing enerQv T hp fi,~;n'.'~('tjnn hn"'0.,~- "

8/7/2019 Laser tables

3/3

Sec.8-1 Lasers and Interaction 177

CommunicationInfornlatioR processing

Optical sensingOptical ranging

Optical storagePrinters and copiers

MetrologyHolographyAlignmentPoint-of-sale scannersEntertainment and display

Materials processingCutting ,

Welding'DrillingHeat freating

MedicaiMarking and scribingMicrofabricationLaser spectroscopyLaser-driven energy

Weaponry