八通式单光栅展宽器的特性研究

THE STRETCHING PROPERTIES OF A EIGHT-PASS SINGLE-GRATING PULSE STRETCHER

本文通过对八通式单光栅展宽器的分析，理论上计算了在啁啾脉冲放大过程中，初始入射的无啁啾超短脉冲相继两次通过展宽器时每次所能获得的展宽倍数，最终得出它第二次的展宽倍数仅约为2，总的展宽倍数是第一次展宽倍数的2倍．

Based on the analysis of a grating Pulse stretcher, two stretching factors have beed investigated, when a ultrshort-pulse was stretched successively for two times in a eight-pass single grating strectcher. We found that the stretching factor of the last time is about 2, And the whole stretching factor for this system were just 2 times of the first one.