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20 April 1998 Laser-induced damage of Cr:LiSAF crystal at 0.85 μm
Oleg M. Efimov, Serge V. Garnov, Leonid B. Glebov, Martin C. Richardson, M. J. Soileau
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Proceedings Volume 3244, Laser-Induced Damage in Optical Materials: 1997; (1998) https://doi.org/10.1117/12.306980
Event: Laser-Induced Damage in Optical Materials: 1997, 1997, Boulder, CO, United States
Abstract
An experimental investigation of laser-induced damage of the Cr:LiSAF crystal under pulses from a Cr:LiSAF laser has been made. For comparison, the same measurements were also made with borosilicate glasses BK7 and K8. The experiments were performed with spot sizes from 0.7 to 50 micrometers . The morphology of the damage area, the spot size dependence, the statistics of the damage thresholds, and the truncation of the transmitted pulses were measured. It was found that for spot sizes of more 10 micrometers , the damage of LiSAF resulted from the presence of local bulk inhomogeneities. For smaller spot sizes the damage resulted from self-focusing. Finally, for spot sizes of less 1 micrometers , the damage resulted form the intrinsic laser-induced damage and its threshold was significantly higher than the threshold for BK7 glass. As a result the spot size dependence for Cr:SAF was found to be stronger than for borosilicate glass.
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Oleg M. Efimov, Serge V. Garnov, Leonid B. Glebov, Martin C. Richardson, and M. J. Soileau "Laser-induced damage of Cr:LiSAF crystal at 0.85 μm", Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998); https://doi.org/10.1117/12.306980
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KEYWORDS
Laser induced damage
Crystals
Laser crystals
Laser damage threshold
Borosilicate glass
Glasses
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