论文部分内容阅读
以负色散光栅对压缩器为模型,通过系统的色散误差公式从理论上分析了飞秒啁啾脉冲放大系统中的展宽器和压缩器的调节精度与系统的光栅对距离、光栅入射角、光栅密度等参量的关系,以及不同宽度入射脉冲对系统调节精度的要求。结果表明,必须选择合适的光栅入射角和光栅密度才能在满足系统对综合性能要求的同时降低对系统调节精度的要求;系统中光栅入射角度的调节具有最高的调节精度要求;入射脉冲宽度越窄则对系统的调节精度的要求越高;整个系统的优化中如果考虑各阶色散之间的相互补偿作用,则可以减少光栅对距离和光栅入射角的调节精度要求。
Taking the negative dispersion grating as a model, the dispersion accuracy of the system is analyzed by the dispersion error formula of the system, and the relationship between the adjustment accuracy of the stretcher and the compressor in the femtosecond chirped pulse amplification system and the grating distance, grating incident angle, grating Density and other parameters of the relationship, as well as different width of the incident pulse on the system to adjust the accuracy requirements. The results show that the appropriate grating incident angle and grating density must be selected to meet the system’s overall performance requirements while reducing the system adjustment accuracy requirements. The adjustment of the grating incident angle has the highest regulation precision requirements. The narrower incident pulse width The higher the requirement for the system’s adjustment accuracy. If the mutual compensation between the dispersion of various orders is considered in the optimization of the whole system, the adjustment precision of the grating to the distance and the incident angle of the grating can be reduced.