A method to obtain pulse contrast on a single shot

作者：Ouyang Xiaoping; Li Xiaoyan; Zhang Yanli; Li Zhaoyang; Xu Guang; Wang Tao; Zhu Baoqiang; Zhu Jianqiang

来源：Chinese Optics Letters, 2009, 7(11): 1001-1003.

DOI：10.3788/COL20090711.1001

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 working 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.

• 出版日期2009-11-10
• 单位中国工程物理研究院上海激光等离子体研究所; 中国科学院上海光学精密机械研究所