A new method for measuring the pulse-front distortion of arbitrary shapes in high-power ultrashort laser systems  

作　　者：左言磊 蒋东镔 朱启华 董军 曾小明 黄小军 黄征 

机构地区：[1]Research Center of Laser Fusion,China Academy of Engineering Physics

出　　处：《Chinese Physics B》2012年第3期244-247,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 10904132 and 11074225);the National Defense Science Technology Foundation of State Key Laboratory of High Temperature and Density Plasma Physics,China (Grant No. 9140C680604110C6805)

摘　　要：We present a new method that can be used to calculate pulse-front distortion by measuring the spectral interference of two point-diffraction fields in their overlapped district. We demonstrate, for the first time, the measurement of the pulse-front distortion of the pulse from a complex multi-pass amplification system, which exists in almost all high-power laser systems, and obtain the irregular pulse-front distribution. The method presented does not need any reference light or assumption about the pulse-front distribution, and has an accuracy of several femtoseconds.We present a new method that can be used to calculate pulse-front distortion by measuring the spectral interference of two point-diffraction fields in their overlapped district. We demonstrate, for the first time, the measurement of the pulse-front distortion of the pulse from a complex multi-pass amplification system, which exists in almost all high-power laser systems, and obtain the irregular pulse-front distribution. The method presented does not need any reference light or assumption about the pulse-front distribution, and has an accuracy of several femtoseconds.

关 键 词：pulse-front distortion multi-pass amplification high-power laser system 

分 类 号：TN247[电子电信—物理电子学]