Year: 2025
Type: article
Abstract: This paper presents an innovative eight-pass laser amplifier design that effectively utilizes polarization and angular multiplexing, enjoying high gain, high extraction efficiency and compact layout. To optimize the design parameters, a general spatiotemporal model for a multi-pass amplifier is established that accounts for beam passages in different angles, and the predicted output energy and gain distribution agree well with the experimental results. The multi-pass amplifier scales the seed energy of 120 mJ to 5 J at 10 Hz and 3 J at 50 Hz, with the beam quality within three times the diffraction limit.
DOI: 10.1017/hpl.2025.32
Authors: Xinxing Lei, Zhou Dai, Xiaokai Huang, Yumei Zhang, Suyang Wang, Yuhang Li, Qiang Liu, Xing Fu
Institution: Tsinghua University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,900
Award: G967592291
OpenAlex ID: W4409236213