Analysis of Bulk DKDP Damage Distribution, Obscuration and Pulse Length Dependence.

Feit, M. D. ; Rubenchik, A. M. ; Runkel, M.

Technical Information Center Oak Ridge Tennessee

关键词: Inertial confinement fusion;    Laser pulses;    Damage assessment;    Crystals;    Rasters;   

RP-ID  :  DE200515013197

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Recent Lawrence Livermore National Laboratory (LLNL) experiments reported elsewhere at this conference explored the pulse length dependence of 351 nm bulk damage incidence in DKDP. The results found are consistent, in part, with a model in which a distribution of small bulk initiators is assumed to exist in the crystal and the damage threshold is determined by reaching a critical temperature. The observed pulse length dependence can be explained as being set by the most probable defect capable of causing damage at a given pulse length. Analysis of obscuration in side illuminated images of the damaged region yields estimates of the damage site distributions that are in reasonable agreement with the distributions experimentally directly estimated