Characteristics of 355 nm Laser Damage in KDP and DKDP Crystals

被引：3
|
作者：
Hu Guo-Hang [1 ,2 ]
Zhao Yuan-An [1 ]
Sun Shao-Tao [3 ]
Li Da-Wei [1 ]
Liu Xiao-Feng [1 ,2 ]
Sun Xun [3 ]
Shao Jian-Da [1 ]
Fan Zheng-Xiu [1 ]
机构：
[1] Acad Sinica, Shanghai Inst Opt & Fine Mech, Key Lab High Power Laser Mat, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 09期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present the characteristics of bulk damage induced by the third harmonic of Nd: YAG laser irradiation in KDP and DKDP crystals. Bulk damage occurs as a few or a series of pinpoints consisting of a core and the deforming zone. The results of a 1-on-1 test reveal that the pinpoint size increases with incvreasing fluence, and the pinpoint density increases exponentially with increasing fluence. The results of an s-on-1 test indicate that the pinpoint density increases gradually with laser pulse number, but the size does not grow. These results are consistent with a model in which nanoabsorbers are assumed to exist in the crystal and the initiation of damage is determined by heating them to the critical temperature.
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页数：4
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