Analysis of output surface damage resulting from single 351 nm, 3 ns pulses on sub-nanosecond laser conditioned KD2PO4 crystals

J. Jarboe, J. Adams, R. Hackel
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引用次数: 3

Abstract

We observe that by conditioning DKDP using 500 ps laser pulses, the bulk damage threshold becomes essentially equivalent to the surface damage threshold. We report here the findings of our study of laser initiated output surface damage on 500 ps laser conditioned DKDP for test pulses at 351 nm, 3 ns. The relation between surface damage density and damaging fluence (ρ(Φ)) is presented for the first time and the morphologies of the surface sites are discussed. The results of this study suggest a surface conditioning effect resulting from exposure to 500 ps laser pulses.
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亚纳秒激光条件下单次351nm, 3ns脉冲对KD2PO4晶体输出表面损伤分析
我们观察到,通过500 ps激光脉冲调节DKDP,体损伤阈值基本上等同于表面损伤阈值。本文报道了在351nm, 3ns的测试脉冲下,在500ps激光条件下激光引发的输出表面损伤的研究结果。首次提出了表面损伤密度与损伤通量ρ(Φ)之间的关系,并讨论了表面部位的形貌。本研究结果表明,暴露在500 ps激光脉冲下会产生表面调理效应。
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