紫外线纳秒激光辐照诱导 KDP 晶体的蒙特卡罗模拟

IF 2.8 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Optical Materials Express Pub Date : 2023-12-06 DOI:10.1364/ome.503879

Runsheng Zheng, Tingting Sui, Haohui Zhuo, and Xin Ju

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引用次数: 0

摘要

磷酸二氢钾及其氘化物（KDP/DKDP）是用于惯性约束聚变的唯一三倍频晶体。KDP 在激光照射下的光子行为尚不清楚。本研究基于蒙特卡洛方法模拟了不同生长环境下 KDP 的紫外光子传输行为。比较结果表明，滤波生长晶体的线性吸收明显较弱，弛豫时间更长。此外，KDP 内部缺陷的浓度是影响线性吸收和弛豫时间的关键原因。最后，讨论了多光子吸收对 KDP 损伤的影响。

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Monte Carlo simulation for KDP crystals induced by ultraviolet nanosecond laser irradiation

Potassium dihydrogen phosphate and its deuteride (KDP/DKDP) are the only tripled frequency crystals used for inertial confinement fusion. The photonic behavior of KDP under laser irradiation is unknown. In this study, the ultraviolet photon transport behavior of KDP with different growth environments has been simulated based on the Monte Carlo method. By comparison, it is shown that the linear absorption of filtered grown crystal is obviously weaker, and the relaxation time is much longer. Moreover, the concentration of defects inside KDP is the critical cause of linear absorption and relaxation time. Finally, the influence of multi-photon absorption on the damage of KDP is discussed.

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来源期刊

Optical Materials Express MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS

CiteScore

5.50

自引率

3.60%

发文量

377

审稿时长

1.5 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optical Materials Express (OMEx), OSA''s open-access, rapid-review journal, primarily emphasizes advances in both conventional and novel optical materials, their properties, theory and modeling, synthesis and fabrication approaches for optics and photonics; how such materials contribute to novel optical behavior; and how they enable new or improved optical devices. The journal covers a full range of topics, including, but not limited to: Artificially engineered optical structures Biomaterials Optical detector materials Optical storage media Materials for integrated optics Nonlinear optical materials Laser materials Metamaterials Nanomaterials Organics and polymers Soft materials IR materials Materials for fiber optics Hybrid technologies Materials for quantum photonics Optical Materials Express considers original research articles, feature issue contributions, invited reviews, and comments on published articles. The Journal also publishes occasional short, timely opinion articles from experts and thought-leaders in the field on current or emerging topic areas that are generating significant interest.