
Proceedings Paper
UV fatigue investigations with non-destructive tools in silicaFormat | Member Price | Non-Member Price |
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Paper Abstract
A fatigue effect is often observed under multiple laser irradiations, overall in UV. This decrease of LIDT, is a critical
parameter for laser sources with high repetition rates and with a need of long-term life, as in spatial applications at
355nm. A challenge is also to replace excimer lasers by solid laser sources, this challenge requires to improve drastically
the lifetime of optical materials at 266nm. Main applications of these sources are devoted to material surface nanostructuration,
spectroscopy and medical surgeries. In this work we focus on the understanding of the laser matter
interaction at 266nm in silica in order to predict the lifetime of components and study parameters links to these lifetimes
to give keys of improvement for material suppliers. In order to study the mechanism involved in the case of multiple
irradiations, an interesting approach is to involve the evolution of fluorescence, in order to observe the first stages of
material changes just before breakdown. We will show that it is sometime possible to estimate the lifetime of component
only with the fluorescence measurement, saving time and materials. Moreover, the data from the diagnostics give
relevant informations to highlight “defects” induced by multiple laser irradiations.
Paper Details
Date Published: 1 August 2017
PDF: 7 pages
Proc. SPIE 10339, Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers, 1033916 (1 August 2017); doi: 10.1117/12.2270016
Published in SPIE Proceedings Vol. 10339:
Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph, Editor(s)
PDF: 7 pages
Proc. SPIE 10339, Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers, 1033916 (1 August 2017); doi: 10.1117/12.2270016
Show Author Affiliations
Frank R. Wagner, Institut Fresnel (France)
Published in SPIE Proceedings Vol. 10339:
Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph, Editor(s)
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