Numerical investigation of output beam quality in efficient broadband optical parametric chirped pulse amplification
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- 作者：Xiao-Di Liua ; b ; Lu Xua ; Xiao-Yan Lianga ; c ; liangxy@siom.ac.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Nonlinear optics ; Parametric processes ; Laser amplifiers
- 刊名：Optics Communications
- 出版年：2017
- 出版时间：15 January 2017
- 年：2017
- 卷：383
- 期：Complete
- 页码：197-207
- 全文大小：3445 K
文摘
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The influence of the pump intensity, pump and signal spatial modulations, and the walk-off effect on OPCPA output beam quality is numerically investigated.
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The dominant influence of pump is verified.
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For small-beam-size NOPCPA systems, walk-off effect is considerable.
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A modulation type is found to optimize output beam quality and efficiency. For high-energy system with large beam sizes, the walk-off effect is negligible. A relatively high conversion efficiency and a low output modulation are both achievable by controlling the pump modulation and intensity.