TY - JOUR
T1 - Temperature dependence of laser induced breakdown
AU - Hammer, Daniel X.
AU - Eiserer, Rex
AU - Noojin, Gary D.
AU - Boppart, Stephen A.
AU - Kennedy, Paul
AU - Roach, W. P.
N1 - Funding Information:
This work was supported by Armstrong Laboratory and AFOSR (2312A101). The authors would like to thank Reginald Birngruber, Alfred Vogel, Randy Thompson, Ben Rockwell, and Mark Rogers for their input into the theoretical discussions of temperature dependence of LIB.
Publisher Copyright:
© 1994 Proceedings of SPIE - The International Society for Optical Engineering. All rights reserved.
PY - 1994/8/17
Y1 - 1994/8/17
N2 - The physical properties of laser-induced optical breakdown (LIB) in highly transparent, dispersive media, like that found in the eye, are of great interest to the ophthalmic community. We examined the temperature dependent characteristics of LIB thresholds in media with a temperature range of 20C to 80C using nanosecond, picosecond, and femtosecond pulses produced in the visible and near infrared spectral regions. Media used for these studies included high purity water, tap water, physiological (0.9%) saline solution, and bovine vitreous1. 10 ns pulses at 532 nm and 60 ps and 90 fs pulses at 580 nm were focused into a sample to produce LIB. Probit analysis was used to determine the 50% probability threshold value (ED) as the temperature of the media was varied. Additional data was obtained by keeping pulse energy constant and varying temperature. ED values for LIB showed no consistent dependence on the temperature of the medium. The theory of the temperature dependence of LIB and the experimental observations for all pulse durations and their implications for retinal damage are discussed.
AB - The physical properties of laser-induced optical breakdown (LIB) in highly transparent, dispersive media, like that found in the eye, are of great interest to the ophthalmic community. We examined the temperature dependent characteristics of LIB thresholds in media with a temperature range of 20C to 80C using nanosecond, picosecond, and femtosecond pulses produced in the visible and near infrared spectral regions. Media used for these studies included high purity water, tap water, physiological (0.9%) saline solution, and bovine vitreous1. 10 ns pulses at 532 nm and 60 ps and 90 fs pulses at 580 nm were focused into a sample to produce LIB. Probit analysis was used to determine the 50% probability threshold value (ED) as the temperature of the media was varied. Additional data was obtained by keeping pulse energy constant and varying temperature. ED values for LIB showed no consistent dependence on the temperature of the medium. The theory of the temperature dependence of LIB and the experimental observations for all pulse durations and their implications for retinal damage are discussed.
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U2 - 10.1117/12.182956
DO - 10.1117/12.182956
M3 - Conference article
AN - SCOPUS:0042103244
SN - 0277-786X
VL - 2134
SP - 38
EP - 48
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
M1 - 1
T2 - Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards 1994
Y2 - 23 January 1994 through 29 January 1994
ER -