A method to obtain pulse contrast on a single shot

A novel method for obtaining a single shot multi-point high dynamic range pulse contrast measurement is presented.We use Dammann gratings to generate multiple beamlets by division of amplitude on ultra-short laser pulses.The analysis results show that this method can achieve high dynamic range in pulse contrast measurement on a single shot by using photomultiplier tube (PMT) detectors and the long work-ing distances to minimize cross talk between channels.Some distortion of pulse shape is also analyzed detailedly with the Dammann grating and its compensation grating, which may degrade the pulse contrast measurement in some degree by pulse stretching and spectrum clipping.

作 者： Xiaoping Ouyang Xiaoyan Li Yanli Zhang Zhaoyang Li Guang Xu Tao Wang Baoqiang Zhu Jianqiang Zhu   作者單位： Xiaoping Ouyang,Xiaoyan Li,Yanli Zhang,Guang Xu,Baoqiang Zhu,Jianqiang Zhu(Shanghai Institute of Optics and Fine Mechanics,Shanghai 201800,China)

Zhaoyang Li,Tao Wang(Shanghai Institute of Laser Plasma,Shanghai 201800,China) 

刊 名： 中國光學(xué)快報(英文版)  ISTIC EI 英文刊名： CHINESE OPTICS OF LETTERS  年，卷(期)： 2009 07(11)  分類號： O4  關(guān)鍵詞：  

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