Wavelength dependence of laser damage in coatings
Conference
·
OSTI ID:552295
- General Physics Institute of The Russian Academy of Science, Moscow (Russian Federation)
A model of laser induced damage in optical coatings due to photoionization thermal explosion of absorbing inclusions proposed and analysed in our previous work reasonably explained dependencies of the laser induced damage threshold (LIDT) on a material band-gap energy and a coating thickness. Continuing the analysis of the model in this paper we present results on a laser radiation wavelength dependence of LIDT. It is shown that this dependence is determined mainly by two factors: wavelength dependencies of inclusion absorption cross section and absorption coefficient of conduction band electrons. A computer analysis done taking into account both factors. Effects of coating thickness and damage statistics are also investigated. Theoretical results are compared and experimental data.
- Research Organization:
- International Society for Optical Engineering, Washington, DC (United States)
- OSTI ID:
- 552295
- Report Number(s):
- CONF-961070--Vol.2966
- Country of Publication:
- United States
- Language:
- English
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