光学
脉冲整形
计算机科学
梁(结构)
物理
脉搏(音乐)
激光器
探测器
作者
Yong Wu,Li Wang,Guoqing Pu,Xuguang Zhang,Chenxu Liu,Kegong Dong,Weisheng Hu,Lilin Yi
出处
期刊:Optics Letters
[The Optical Society]
日期:2024-10-09
卷期号:49 (21): 6333-6333
摘要
A fully digital control scheme for non-polarization-maintaining (non-PM) nanosecond pulse coherent beam combining (CBC) is proposed, where digital locking of optical coherence by single-detector electronic-frequency tagging (LOCSET) for active phase control and stochastic parallel gradient descent (SPGD) for active polarization control is proposed. The fully digital control scheme is integrated on a real-time field-programmable gate array (FPGA) empowered hardware platform and then experimentally validated in a four-channel all-fiber non-fully polarization-maintaining nanosecond pulse CBC system. Consequently, the system can be fully locked in 9.5 ms, and the polarization extinction ratio (PER) of the combined beam is 21.5 dB with a CBC efficiency of 95.3%. The fully digital control scheme integrates the advantages of digital LOCSET and multi-channel active polarization control, enhancing the channel scalability and the potential output power of the non-PM pulse CBC system.
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