充气多通电池的非线性光束匹配

IF 1.6 Q3 OPTICS
OSA Continuum Pub Date : 2021-02-05 DOI:10.1364/OSAC.418247
M. Hanna, L. Daniault, F. Guichard, Nour Daher, X. Délen, R. López-Martens, P. Georges
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引用次数: 1

摘要

充气的多通道细胞是一种有吸引力的替代毛细管来实现高能量飞秒激光的非线性时间压缩。在这里,我们提供了考虑非线性传播的多通单元的稳态光束耦合的解析表达式。这使得反射镜和电池腰部的光束尺寸恒定,从而使光学设计更加精确,例如避免光学损坏或显著电离。利用近同心结构的时空数值模拟验证了分析结果。这对于在高度非线性状态下工作的多通道单元尤其重要,这是当前的趋势,因为它允许更少的往返次数,从而放松了对反射镜涂层性能的限制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nonlinear beam matching to gas-filled multipass cells
Gas-filled multipass cells are an appealing alternative to capillaries to implement nonlinear temporal compression of high energy femtosecond lasers. Here, we provide an analytic expression for stationary beam coupling to multipass cells that takes into account nonlinear propagation. This allows a constant beam size on the mirrors and at the cell waist, thereby making the optical design more accurate, for example to avoid optical damage or significant ionization. The analysis is validated using spatio-temporal numerical simulations of the propagation in a near-concentric configuration. This is particularly important for multipass cells that are operated in a highly nonlinear regime, which is the current trend since it allows a lower number of roundtrips, relaxing the constraint on mirror coatings performance.
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OSA Continuum
OSA Continuum OPTICS-
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