A 100-PW compressor based on single-pass single-grating pair. (13th January 2023)

• Record Type: Journal Article
• Authors: Du, Shuman; Shen, Xiong; Liang, Wenhai; Wang, Peng; Liu, Jun; Li, Ruxin
• Is Part Of: High power laser science and engineering. Volume 11(2023)
• Publication Date: 2023-01-13
• Subjects: beam smoothing -- multistep pulse compressor -- petawatt -- single-grating-pair compressor; High power lasers -- Periodicals; 621.366
• DOI: 10.1017/hpl.2023.5
• Languages: English
• ISSNs: 2095-4719

Abstract

Abstract: A multistep pulse compressor (MPC) based on a single-pass single-grating pair (SSGP) is proposed to simplify the entire multi-petawatt (PW) compressor. Only one grating pair with relatively long perpendicular distance is used to generate the same amount of spectral chirp compared with a four-grating main compressor. As SSGP compressor induces the largest spatial chirp, it can introduce the best beam-smoothing effect to the laser beam on the last grating. When considering the diffraction loss of only two gratings, the total compression efficiency of the SSGP compressor is even larger than that of a four-grating main compressor. Furthermore, the wavefront aberration induced by the SSGP compressor can be better compensated by using deformable mirrors; however, it is difficult or complicated to be well compensated in a four-grating compressor. Approximately 50–100 PW laser pulses can be obtained using this SSGP-based multistage-smoothing MPC with a single laser beam.