Temporal contrast reduction techniques for high dynamic-range single-shot temporal contrast measurement
Abstract
A single-shot characterization of the temporal contrast of a petawatt laser pulse with a high dynamic-range, is important not only for improving conditions of the petawatt laser facility itself, but also for various high-intensity laser physics experiments, which is still a difficult problem. In this study, a new idea for improving the dynamic-range of a single-shot temporal contrast measurement using novel temporal contrast reduction techniques is proposed. The proof-of-principle experiments applying single stage of pulse stretching, anti-saturated absorption, or optical Kerr effect successfully reduce the temporal contrast by approximately one order of magnitude. Combining with the SRSI-ETE method, its dynamic-range characterization capability is improved by approximately one order of magnitude to approximately 109. It is expected that a higher dynamic-range temporal contrast can be characterized using cascaded temporal contrast reduction processes.
Cite
@article{arxiv.1902.05256,
title = {Temporal contrast reduction techniques for high dynamic-range single-shot temporal contrast measurement},
author = {Xiong Shen and Peng Wang and Jingxin Zhu and Zhe Si and Yuxia Zhao and Jun Liu and Ruxin Li},
journal= {arXiv preprint arXiv:1902.05256},
year = {2019}
}
Comments
29 pages, 7 figures