Band-stop angular filtering with hump volume Bragg gratings
Band-stop angular filtering with hump volume Bragg gratings
复制标题
带驼峰体布拉格光栅的带阻角度滤波
DOI:
10.1017/hpl.2019.12
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发表时间:
2019-03
期刊:
影响因子:
--
通讯作者:
Xiao Yuan
中科院分区:
文献类型:
--
作者:
Fan Gao;Xin Wang;Tiancheng Yu;Xiang Zhang;Xiao Yuan
A band-stop angular filter (BSF) based on hump volume Bragg gratings (HVBGs) is proposed. Band-stop filtering in a two-stage amplifier laser system is discussed and simulated. Simulation results show that small-scale self-focusing effects in the laser system can be effectively suppressed with the BSF due to the control of fast nonlinear growth in a specific range of spatial frequencies in the laser beam. Near-field modulation of the output beam from the laser system was decreased from 2.69 to 1.37 by controlling the fast nonlinear growth of spatial frequencies ranging from $0.6~\text{mm}^{-1}$ to $1.2~\text{mm}^{-1}$ with the BSF. In addition, the BSF can be used in a plug-and-play scheme and has potential applications in high-power laser systems.
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--
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