31 December 2009 Laser induced damage of sapphire and titanium doped sapphire crystals under femtosecond to nanosecond laser irradiation
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Abstract
The use of large Ti:Sapphire crystals in ultra fast high peak power laser amplifiers makes crucial the problem of crystal laser induced damage. These works aim to quantify the laser induced damage threshold (LIDT) of Sapphire and Ti:Sapphire crystals under femtosecond, picosecond and nanosecond laser pulse irradiations, which are typically encountered in such laser chains. Furthermore, a study of the influence of cryogenic conditions on the LIDT of Ti:Sapphire crystals and of their anti-reflection coating has been performed. The results are important to understand the mechanisms leading to the damage, and to reveal the key parameters which will have to be optimized in future high peak power laser chains.
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B. Bussière, O. Utéza, N. Sanner, M. Sentis, G. Riboulet, L. Vigroux, M. Commandré, F. Wagner, J.-Y. Natoli, J.-P. Chambaret, "Laser induced damage of sapphire and titanium doped sapphire crystals under femtosecond to nanosecond laser irradiation", Proc. SPIE 7504, Laser-Induced Damage in Optical Materials: 2009, 75041N (31 December 2009); doi: 10.1117/12.836191; https://doi.org/10.1117/12.836191
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