High-energy, high-peak-power, sub-nanosecond, spatial super-Gaussian 177 nm vacuum ultraviolet laser

Ning Wen; Tian-Hao Lv; Nan Zong; Hong-Wei Gao; Yong Bo; Qin-Jun Peng; Da-Fu Cui; Zu-Yan Xu; Xiao-Yang Wang; Li-Juan Liu; Ru-Kang Li; Nan Wang; Xue-Chun Lin

doi:10.1017/hpl.2024.46

High Power Laser Science and Engineering (Jan 2024)

High-energy, high-peak-power, sub-nanosecond, spatial super-Gaussian 177 nm vacuum ultraviolet laser

Ning Wen,
Tian-Hao Lv,
Nan Zong,
Hong-Wei Gao,
Yong Bo,
Qin-Jun Peng,
Da-Fu Cui,
Zu-Yan Xu,
Xiao-Yang Wang,
Li-Juan Liu,
Ru-Kang Li,
Nan Wang,
Xue-Chun Lin

Affiliations

Ning Wen: ORCiD; Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China University of Chinese Academy of Sciences, Beijing, China
Tian-Hao Lv: Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China University of Chinese Academy of Sciences, Beijing, China
Nan Zong: Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan, China
Hong-Wei Gao: Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan, China
Yong Bo: Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan, China
Qin-Jun Peng: Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan, China
Da-Fu Cui: Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
Zu-Yan Xu: Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
Xiao-Yang Wang: Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
Li-Juan Liu: Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
Ru-Kang Li: Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
Nan Wang: Laboratory of All-Solid-State Light Source, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China
Xue-Chun Lin: Laboratory of All-Solid-State Light Source, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China

DOI: https://doi.org/10.1017/hpl.2024.46
Journal volume & issue: Vol. 12

Abstract

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A high-energy pulsed vacuum ultraviolet (VUV) solid-state laser at 177 nm with high peak power by the sixth harmonic of a neodymium-doped yttrium aluminum garnet (Nd:YAG) amplifier in a KBe2BO3F2 prism-coupled device was demonstrated. The ultraviolet (UV) pump laser is a 352 ps pulsed, spatial top-hat super-Gaussian beam at 355 nm. A high energy of a 7.12 mJ VUV laser at 177 nm is obtained with a pulse width of 255 ps, indicating a peak power of 28 MW, and the conversion efficiency is 9.42% from 355 to 177 nm. The measured results fitted well with the theoretical prediction. It is the highest pulse energy and highest peak power ever reported in the VUV range for any solid-state lasers. The high-energy, high-peak-power, and high-spatial-uniformity VUV laser is of great interest for ultra-fine machining and particle-size measurements using UV in-line Fraunhofer holography diagnostics.

Published in High Power Laser Science and Engineering

ISSN: 2095-4719 (Print); 2052-3289 (Online)
Publisher: Cambridge University Press
Country of publisher: United Kingdom
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website: https://www.cambridge.org/core/journals/high-power-laser-science-and-engineering

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