Temperature dependence of laser induced breakdown

Daniel X. Hammer, Rex Eiserer, Gary D. Noojin, Stephen A. Boppart, Paul Kennedy, W. P. Roach

Research output: Contribution to journalConference articlepeer-review

Abstract

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.

Original languageEnglish (US)
Article number1
Pages (from-to)38-48
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2134
DOIs
StatePublished - Aug 17 1994
Externally publishedYes
EventLaser-Tissue Interaction V; and Ultraviolet Radiation Hazards 1994 - Los Angeles, United States
Duration: Jan 23 1994Jan 29 1994

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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