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18 December 2007 Comparison of ns and sub-ns laser conditioning of KDP and DKDP crystals for high power lasers
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Abstract
In this paper, we present various laser conditioning experiments which have been performed with KDP SHG and DKDP THG samples. The different conditioning facilities used delivered laser pulses at 351 nm in the nanosecond (from 3 to 12 ns) or in the sub-ns (600 ps) regime. Finally, the efficiency of the various conditioning protocols was compared: 526 nm-6 ns and 351 nm-3 ns damage tests were performed respectively on SHG and THG samples. The results show that laser-conditioning SHG KDP samples at 351 nm either with ns or sub-ns pulses allows reducing the laser damage density so that it becomes consistent with the specification of high power lasers. They also confirm that conditioning THG DKDP samples at 351 nm using sub-ns pulses is more efficient than using ns pulses.
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C. Maunier, B. Bertussi, D. Damiani, T. Donval, G. Duchateau, A. . Dyan, G. Gaborit, L. Lamaignère, X. Leborgne, M. Loiseau, H. Mathis, and G. Raze "Comparison of ns and sub-ns laser conditioning of KDP and DKDP crystals for high power lasers", Proc. SPIE 6720, Laser-Induced Damage in Optical Materials: 2007, 67201L (18 December 2007); https://doi.org/10.1117/12.752826
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