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Proceedings Paper

Waves of reflection and conduction in ZnS, ZnSe, and Ge irradiated by single pulse of CO2 laser as a possible tool of precatastrophic damage indications
Author(s): Eugene M. Kudriavtsev; Sebastian Lefranc; Michel L. Autric
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Paper Abstract

Waves of reflection and conduction (WRC) was found in 1992 as a new reversible photoinduced phenomenon. Here WRC was studied for IR transparent semiconductors ZnS, ZnSe, Ge in the process of optical damage testing of this materials. It was measured the variations of reflected or transmitted beam intensity of the He-Ne and CO2 lasers when WRC pulses generated on the front and rear sample surfaces moved through the sample with velocities of order of sound velocity v1 and approximately 1/4, 1/8, 1/16, 1/32 of v1 with many reflections. This WRC pulses realize some part of non stationer heat transfer in solids. This WRC component velocities increased up to 2 times with the sample focus region temperature increasing as an effect of the energy pulse growing and different levels of damage occurring. It gives the possibility to develop the technique for the remote nondestructive precatastrophic indications of damage. This work was sponsored by DRET and as project 97- 02-17954 by RFBR.

Paper Details

Date Published: 20 April 1998
PDF: 10 pages
Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998); doi: 10.1117/12.307005
Show Author Affiliations
Eugene M. Kudriavtsev, P.N. Lebedev Physical Institute (Russia)
Sebastian Lefranc, Univ. of Marseilles (France)
Michel L. Autric, Univ. of Marseilles (France)

Published in SPIE Proceedings Vol. 3244:
Laser-Induced Damage in Optical Materials: 1997
Gregory J. Exarhos; Arthur H. Guenther; Mark R. Kozlowski; M. J. Soileau, Editor(s)

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