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Proceedings Paper

Kinetic model of optical damage in transparent crystals under continuous-wave laser irradiation
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Paper Abstract

LiNbO3 and LiTaO3 are frequently used in second harmonic conversion of continuous-wave light from the infrared to the visible regions. Optical damage of LiNbO3-type crystals is a crucial issue in the high-average-power laser systems. The optical damage by a light-induced heating is investigated. We have proposed a light-induced heating by the accumulated long-lived states like polarons or self-trapped excitons. In addition to the long-lived states, point defects as color centers are created by a radiation. A new model includes these states. As a results, it is shown that a creating rate of the color center becomes a important parameter on the determination of critical power.

Paper Details

Date Published: 13 November 2017
PDF: 5 pages
Proc. SPIE 10447, Laser-Induced Damage in Optical Materials 2017, 104471Z (13 November 2017); doi: 10.1117/12.2279957
Show Author Affiliations
Susumu Kato, National Institute of Advanced Industrial Science and Technology (Japan)
Atsushi Sunahara, Purdue Univ. (United States)
Sunao Kurimura, National Institute for Materials Science (Japan)

Published in SPIE Proceedings Vol. 10447:
Laser-Induced Damage in Optical Materials 2017
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau, Editor(s)

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