适合偏振控制的大孔径板中KDP/DKDP的横向受激拉曼散射建模

IF 5.2 1区 物理与天体物理 Q1 OPTICS High Power Laser Science and Engineering Pub Date : 2023-06-14 DOI:10.1017/hpl.2023.43
Hu Huang, T. Kosc, T. Kessler, S. Demos
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引用次数: 0

摘要

用于大孔径惯性约束聚变(ICF)级激光系统的磷酸二氢钾(KDP)和氘化磷酸二氢钾(DKDP)板的横向受激拉曼散射(TSRS)是一个公认的缺陷,会导致寄生能量转换和激光诱导损伤。TSRS的发病表现在暴露于光束的紫外线部分的板。TSRS放大是一个呈指数增长的相干过程,在晶体内和晶体表面分布不均匀。为了了解不同配置下TSRS能量的增长和空间分布,研究人员开发了一种建模方法来模拟与icf级激光系统相关的操作条件。本文研究的具体方面包括:(i)适用于三次谐波产生的大孔径晶体板中TSRS的行为,并在当前一代icf级激光系统配置中用作偏振控制的波片;(ii)抑制TSRS的方法及其局限性;(iii)指导未来设计的最佳几何形状。
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Modeling of transverse stimulated Raman scattering in KDP/DKDP in large-aperture plates suitable for polarization control
Abstract Transverse stimulated Raman scattering (TSRS) in potassium dihydrogen phosphate (KDP) and deuterated potassium dihydrogen phosphate (DKDP) plates for large-aperture, inertial confinement fusion (ICF)-class laser systems is a well-recognized limitation giving rise to parasitic energy conversion and laser-induced damage. The onset of TSRS is manifested in plates exposed to the ultraviolet section of the beam. TSRS amplification is a coherent process that grows exponentially and is distributed nonuniformly in the crystal and at the crystal surfaces. To understand the growth and spatial distribution of TSRS energy in various configurations, a modeling approach has been developed to simulate the operational conditions relevant to ICF-class laser systems. Specific aspects explored in this work include (i) the behavior of TSRS in large-aperture crystal plates suitable for third-harmonic generation and use as wave plates for polarization control in current-generation ICF-class laser system configurations; (ii) methods, and their limitations, of TSRS suppression and (iii) optimal geometries to guide future designs.
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来源期刊
High Power Laser Science and Engineering
High Power Laser Science and Engineering Physics and Astronomy-Nuclear and High Energy Physics
CiteScore
7.10
自引率
4.20%
发文量
401
审稿时长
21 weeks
期刊介绍: High Power Laser Science and Engineering (HPLaser) is an international, peer-reviewed open access journal which focuses on all aspects of high power laser science and engineering. HPLaser publishes research that seeks to uncover the underlying science and engineering in the fields of high energy density physics, high power lasers, advanced laser technology and applications and laser components. Topics covered include laser-plasma interaction, ultra-intense ultra-short pulse laser interaction with matter, attosecond physics, laser design, modelling and optimization, laser amplifiers, nonlinear optics, laser engineering, optical materials, optical devices, fiber lasers, diode-pumped solid state lasers and excimer lasers.
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