复杂激光脉冲波形的整形

介绍了用时空变换的方法对激光脉冲整形的原理；提出了由于硬边光通量调制器引入的动态的光脉冲强度空间分布的不一致性及其克服的方法，理论上用二维快速傅里叶变换（ＦＦＴ）进行了验证；最后计算了系统光强透过率和光束焦斑大小，调制狭缝宽度的关系，为了显示本系统的复杂脉冲整形能力，在实验上获得了惯性约束核聚变（ＩＣＦ）感兴趣的复杂激光脉冲波形。

Shaping of Laser Complex Shape Pulses

This paper introduces the principles of pulse shaping by method of spatialtemporal transform. It is pointed out that a slit of light fluence modulator would cause dynamical discordance of spatial intensity distribution. The solution is presented and certified by two dimension FFT stimulation mathematically. Finally the dependence of system transmission factor on focued beam spot size and width of the slit is caculated.Experimentally a complex pulse is got, which is typical one for ICF experiment to demonstrate the shaping ability of the system.