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Paul K. Kennedy


Click on the titles below to find US government-authored or -collected reports written by Paul K. Kennedy

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Retinal Damage and Laser-Induced Breakdown Produced by Ultrashort-Pulse Lasers SEP 96 12 pages
Authors:  Clarence P. Cain; Cher I. DiCarlo; Benjamin A. Rockwell; Paul K. Kennedy; W. P. Roach; ANALYTIC SCIENCES CORP SAN ANTONIO TX
The full text of this report is available for sale.In vivo retinal injury studies using ultrashort-pulse lasers at visible wavelengths for both rabbit and primate eyes have been completed, and the results are presented herein for laser-induced breakdown (LIB) and bubble generation. Results of previous measurements for the millimum visible lesion (MVL) threshold doses for both primate and rabbit eyes were reported earlier for pulsewidths from 4 nanoseconds (ns) to as low as 90 femtoseconds (fs). We have recorded ...


Experimental Investigation of Ultrashort Pulse Laser-Induced Breakdown Thresholds in Aqueous Media APR 96 11 pages
Authors:  Daniel X. Hammer; Robert J. Thomas; Gary D. Noojin; Benjamin A. Rockwell; Paul K. Kennedy; ARMSTRONG LAB BROOKS AFB TX OCCUPATIONAL AND ENVIRONMENTAL HEALTH DIRECTORATE
The full text of this report is available for sale.Laser induced breakdown (LIB) thresholds are determined for pulse durations of 2.4 PS, 400 fs, and 100 fs at 580 nm in high purity water, saline and tap water. The dependence of LIB irradiance thresholds on pulse duration, optical wavelength, and focal volume is examined, and the experimental data obtained is compared with a theoretical model. The slopes of the probability curves calculated are compared with mechanisms for LIB, namely ...


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