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啁啾脉冲激光放大中的自相位调制效应
引用本文:沈宇震,王清月,邢歧荣,石季英.啁啾脉冲激光放大中的自相位调制效应[J].物理学报,1996,45(2):214-221.
作者姓名:沈宇震  王清月  邢歧荣  石季英
作者单位:天津大学精密仪器系,天津300072
基金项目:光电子信息工程开放研究实验室部分资助的课题
摘    要:利用光与物质相互作用的半经典理论建立了啁啾脉冲激光放大的输运方程,数值分析了多程放大过程中自相位调制对啁啾脉冲时域特性和频域特性的影响研究结果表明,由于自相位调制引起附加频率啁啾产生,啁啾脉冲瞬时频率发生变化,放大特性受到影响.通过对增益饱和状态下自相位调制效应的研究,提出利用入射脉冲的线性频率啁啾抑制自相位调制的影响. 关键词

关 键 词:啁啾脉冲  激光放大  自相位调制
收稿时间:1995-03-20

SELF-PHASE MODULATION IN CHIRPED-PULSE AMPLIFICATION
SHEN YU-ZHEN,WANG QING-YUE,XING QI-RONG and SHI JI-YING.SELF-PHASE MODULATION IN CHIRPED-PULSE AMPLIFICATION[J].Acta Physica Sinica,1996,45(2):214-221.
Authors:SHEN YU-ZHEN  WANG QING-YUE  XING QI-RONG and SHI JI-YING
Abstract:Based on semiclassical approach, the transport equations of chirped-pulse amplification are presented. Time-and spectral-domain evolution of chirped pulse and effects of self-phase modulation in multipass amplification are numerically analyzed. Theoretical results show that the new frequency chirp induced by self-phase modulation changes the instantaneous frequency of chirped pulse and affects the quality of amplified pulse. The study of chirped-pulse amplification in the gain saturation regime shows that the linear frequency chirp of input pulse tends to suppress the effects of self-phase modulation.
Keywords:
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