1Key Laboratory of High Power Laser Materials, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 2Graduate School of Chinese Academy of Sciences, Beijing 100049 3State Key Laboratory of Crystal Materials, Shandong University, Shandong 250100
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.
De Yoreo J, Burnham A and Whitman P 2002 Int. Mater.Rev. 47 113
[2]
Feit D M, Rubenchik M A and Runkel M 2001 SPIE 4347 383
[3]
Huang W Q, Han W, Wang F, Xiang Y, LI F Q, Feng B, Jing F,Wei X F, Zheng W G and Zhang X M 2009 Chin. Phys. Lett. 26 017901
[4]
Burnham A, Hackel L, Wegner P, Parham T, Hrubesh L,Penetrante B, Whitman P, Demos S, Menapace J, Runkel M, Fluss M,Feit M, Key M and Biesiada T 2002 Proc. SPIE 4679 173
[5]
Carr C, Feit M and Rubenchik A 2005 Proc. SPIE 5991 59911Q
[6]
Hu G H, Zhao Y A, Sun S T, Li D W, Sun X, Shao J D and FanZ X 2009 Chin. Phys. Lett. 26 087801
[7]
Hopper R and Uhlmann D 1970 J. Appl. Phys. 414023
[8]
Feit M and Rubenchik A 2004 Proc. SPIE 5273 74
[9]
Dyan A, Pommies M, Duchateau G, Enguehard F, Lallich S,Bertussi B, Damiani D, Piombini H and Mathis H 2007 Proc. SPIE 6403 640307
[10]
Carr C, Feit M, Johnson M and Rubenchik A 2006 Appl.Phys. Lett. 89 131901
HU Guo-Hang, ZHAO Yuan-An, SUN Shao-Tao, LI Da-Wei, LIU Xiao-Feng, SUN Xun, SHAO Jian-Da, FAN Zheng-Xiu. Characteristics of 355nm Laser Damage in KDP and DKDP Crystals[J]. Chin. Phys. Lett., 2009, 26(9): 097802. DOI: 10.1088/0256-307X/26/9/097802
HU Guo-Hang, ZHAO Yuan-An, SUN Shao-Tao, LI Da-Wei, LIU Xiao-Feng, SUN Xun, SHAO Jian-Da, FAN Zheng-Xiu. Characteristics of 355nm Laser Damage in KDP and DKDP Crystals[J]. Chin. Phys. Lett., 2009, 26(9): 097802. DOI: 10.1088/0256-307X/26/9/097802
HU Guo-Hang, ZHAO Yuan-An, SUN Shao-Tao, LI Da-Wei, LIU Xiao-Feng, SUN Xun, SHAO Jian-Da, FAN Zheng-Xiu. Characteristics of 355nm Laser Damage in KDP and DKDP Crystals[J]. Chin. Phys. Lett., 2009, 26(9): 097802. DOI: 10.1088/0256-307X/26/9/097802
HU Guo-Hang, ZHAO Yuan-An, SUN Shao-Tao, LI Da-Wei, LIU Xiao-Feng, SUN Xun, SHAO Jian-Da, FAN Zheng-Xiu. Characteristics of 355nm Laser Damage in KDP and DKDP Crystals[J]. Chin. Phys. Lett., 2009, 26(9): 097802. DOI: 10.1088/0256-307X/26/9/097802