Sum-frequency generation of 133 mJ, 270 ps laser pulses at 266 nm in LBO crystals-Reference-Cited by-同舟云学术

Sum-frequency generation of 133 mJ, 270 ps laser pulses at 266 nm in LBO crystals

Published:2022-02-07 Issue:4 Volume:30 Page:5700
ISSN:1094-4087
Container-title:Optics Express
language:en
Short-container-title:Opt. Express

Author:

Wang Nan¹²³^ORCID,Zhang Jingyuan¹²,Yu Haijuan¹²,Lin Xuechun¹²,Yang Guowen¹

Affiliation:

1. Chinese Academy of Sciences

2. Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing

3. University of Chinese Academy of Sciences

Abstract

We demonstrate the generation of high-energy (133 mJ) and sub-nanosecond (∼270 ps) deep ultraviolet (DUV) pulses at 266 nm by sum-frequency mixing in LiB3O5 (LBO) crystals. The highest 133 mJ pulse energy ever reported corresponds to a peak power of 0.49 GW and an energy conversion efficiency of 13.3% from the infrared at 1064 nm to DUV at 266 nm. This is the highest output energy ever reported for the DUV sub-nanosecond pulses to the best of our knowledge. Higher energy efficiency of 25.7% can be achieved from 1064 nm to 266 nm when the fundamental energy was reduced to 346 mJ. Furthermore, the DUV generations using LBO and typical β-BaB2O4 (BBO) crystals were compared regarding the energy efficiency, and the effects of the nonlinear absorption are discussed.

Funder

Scientific Instrument Developing Project of the Chinese Academy of Sciences

National Natural Science Foundation of China

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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