摘要
从Ｍａｘｗｅｌ波动方程出发，建立了描述脉冲在啁啾放大系统中传播的非线性薛定谔方程；采用数值计算，系统地分析研究了放大过程中的各种效应对脉冲的影响，给出了啁啾脉冲在频域、时域内及放大压缩后脉冲信噪比的动态演化特征；讨论了展宽器附加色散量在放大过程中的影响。
A theoretical model of chirped pulse amplification is presented, and based on which we give the numerical analysis on the evolution of stretched pulse in the amplifier. Amplitude and phase modulation including: gain narrowing, self phase modulation, gain saturation and higher order dispersions experienced by the pulse in the CPA system are responsible for the distortions on the temporal shape, power spectra and recompressed autocorrelation trace of the amplified pulse. In addition, for the first time the contribution of stretching chirps from the stretcher on the distortions of the pulse is studied in detail.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1999年第2期165-171,共7页
High Power Laser and Particle Beams
基金
国家科委攀登计划基金
关键词
啁啾脉冲放大
增益窄化
数值分析
激光放大
chirped pulse amplification
gain nairowing
self phase modulation
gain saturaition
