光栅展宽系统中脉冲展宽比受高阶色散影响的数值分析  

NUMERICAL ANALYSIS ON THE INFLUENCE OF HIGH-ORDER DISPERSION ON PULSES EXPAND RATIO IN GRATING EXPANDER

作　　者：穆参军[1] 白晋涛[1] 侯洵[1] 

机构地区：[1]西北大学光子学与光子技术研究所

出　　处：《光子学报》2002年第10期1220-1224,共5页Acta Photonica Sinica

摘　　要：分析了光栅展宽器中高阶色散对飞秒种子脉冲展宽量的影响 ,给出了精确计算展宽器展宽倍数的公式 ,并且针对反射式共焦望远镜系统引入的球差对展宽系统的色散量进行了修正 通过数值计算与实验结果比较验证了理论计算的精确性 。The influence of high order dispersion on stretching factor for femtosecond seed pulses in grating expander is analyzed.A formula calculating the stretching factor accurately is given.In addition,the second order dispersion of expander is revised according to the spherical aberration introduced by reflexible and confocal telescope.The accuracy of theoretical calculation proven by comparing numerical calculation to experiment results is good.Consequently an effective way to calculate stretching factor due to dispersion is offered.

关 键 词：光栅展宽系统 高阶色散 影响 数值分析 展宽比 球 飞秒种子脉冲 激光放大器 

分 类 号：TN787.2[电子电信—电路与系统] TN722.32