A new grating-based pulse compressor for achieving high-energy PW laser pulse

Shuman Du; Xiong Shen; Wenhai Liang; Peng Wang; Jun Liu

doi:10.1117/12.2602447

9 October 2021 A new grating-based pulse compressor for achieving high-energy PW laser pulse

Shuman Du, Xiong Shen, Wenhai Liang, Peng Wang, Jun Liu

Proceedings Volume 11890, Advanced Lasers, High-Power Lasers, and Applications XII; 1189017 (2021) https://doi.org/10.1117/12.2602447
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

High-energy PW laser pulses provide unprecedented extreme conditions which are key tools for exploring frontier fundamental researches. Recently, a new limitation from traditional grating-based pulse compressor appeared during achieve high-energy tens and hundreds PW laser pulses because the damage threshold and maximum size of diffraction gratings are not high or large enough to satisfy the requirement. Here, we propose feasible grating-based pulse compressors that can compress high-energy 100 PW laser pulse with a single beam. It contains two schemes, one is multistep pulse compressor that including pre-compressor, main compressor and post compressor, while the other is asymmetric four-grating compressor that replaces the pre-compressor and main compressor. The proposed novel grating-based pulse compressors increase the maximum bearable input and output pulse energies through modifying their spatiotemporal properties, and the introduced smoothing beam with spatial dispersion can be automatically compensated at the focal plane by using the spatiotemporal focusing technique. In this paper, we use Matlab to theoretically verify the possibility of the new grating-based pulse compressors. The simulation results are extremely consistent with our expectations that the two schemes can effectively smooth the beam by inducing spatial dispersion and effectively achieve 100 PW laser pulse. This creative optical design will simplify the high-energy compressor, improve the stability of PW laser system and ultimately increase the output laser energy, which allows us to explore more frontier fundamental researches.

Citation Download Citation

Shuman Du, Xiong Shen, Wenhai Liang, Peng Wang, and Jun Liu "A new grating-based pulse compressor for achieving high-energy PW laser pulse", Proc. SPIE 11890, Advanced Lasers, High-Power Lasers, and Applications XII, 1189017 (9 October 2021); https://doi.org/10.1117/12.2602447

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