Impact of the second order dispersion on compensation of SPM in an adaptive pulse pre-shaping quasi-CPA sys-tem

摘要

A model of quasi-CPA (chirped pulse amplification) system, in which the input is the transform-limited Gaussian pulses, is set up numerically to investigate the impact of the second order dispersion on the adaptive compensation of self-phase modulation (SPM) effect. The adaptive phase pre-shaping controlled by differential evolution algorithm is introduced the input pulse before amplification and recompression. With maximizing the peak power of the output pulse, the simula tion results show that the normal dispersion is really helpful to eliminate the side lobes of the output pulse and increase the pulse peak power.