One-on-One and R-on-One Tests on KDP and DKDP Crystals with Different Orientations |
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Authors: | HU Guo-Hang ZHAO Yuan-An SUN Shao-Tao LI Da-Wei SUN Xun SHAO Jian-Da FAN Zheng-Xiu |
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Affiliation: | Key Laboratory of Material Science and Technology for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800Graduate School of Chinese Academy of Sciences, Beijing 100049State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 |
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Abstract: | By testing a substantial number of tripler and z-cut KDP and DKDP crystals, we have observed that at 355nm, the laser induced damage threshold in the R-on-one test is higher than that in the one-on-one test. It is proved that laser conditioning is an efficient way to improve the damage resistance. The efficiency of laser conditioning becomes increasingly good with smaller ramping fluence steps. We have also found that the damage resistance of the z-cut crystal is higher than the tripler cut, and the pinpoint number is definitely less in the z-cut crystal. The reason for these observations is discussed. |
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Keywords: | 78.20.-e |
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