现代应用物理2025，Vol.16Issue(3)：50-58,9.DOI:10.12061/j.issn.2095-6223.202410013
甲烷后向拉曼的亚纳秒大脉冲能量激光研究
A Sub‒Nanosecond Large Pulse Energy Methane Backward Raman Laser
摘要
Abstract
Due to the phase conjugation effect,the backward Raman laser usually has better beam quality than the pump laser.In addition,backward Raman laser also has the ability of pulse compressing,so it is very helpful to improve the peak power of Raman laser.Through numerical simulations,the compression process and mechanisms of backward Raman laser are analyzed,and the self-termination phenomenon and compression of backward Raman seed laser pulse are elucidated.In this paper,1 064 nm laser is used to pump methane backward Raman,and the pulse width is compressed from 5.40 ns of the pump laser to 0.58 ns of the Raman laser.As a seed light,the pulse width of the Raman laser is further narrowed by two‒stage backward stimulated Raman amplification.Finally,the narrowest pulse width is 0.46 ns and the maximum pulse energy is 85.3 mJ.关键词
后向受激拉曼散射/拉曼放大/自终止现象/脉冲压缩/亚纳秒Key words
backward stimulated Raman scattering(BSRS)/stimulated Raman amplification(SRA)/self‒termination phenomenon/pulse compression/sub‒nanosecond分类
数理科学引用本文复制引用
钱飞宇,郭敬为,蔡向龙,刘栋,徐明,孙景露,王海洋,贾雨熹,谭彦楠,刘万发..甲烷后向拉曼的亚纳秒大脉冲能量激光研究[J].现代应用物理,2025,16(3):50-58,9.基金项目
某部预研项目(5091501012) （5091501012）
