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arXiv · 1902.05256

Temporal contrast reduction techniques for high dynamic-range single-shot temporal contrast measurement

Xiong Shen·Peng Wang·Jingxin Zhu·Zhe Si·Yuxia Zhao·Jun Liu·Ruxin Li
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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.

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Xiong Shen, Peng Wang, Jingxin Zhu, Zhe Si, Yuxia Zhao, Jun Liu, Ruxin Li. 2019-02-14. Temporal contrast reduction techniques for high dynamic-range single-shot temporal contrast measurement. https://doi.org/10.1364/oe.27.010586

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