High-Beam-Quality and High-Brightness 532 nm Laser with Output Power 96 W

Hongcai Liu; Qingxuan Li; Yu Ding; Xuesheng Liu; Jiapeng Hu; Boyi Yang; Youqiang Liu; Zhiyong Wang

doi:10.3390/cryst13020290

Crystals (Feb 2023)

High-Beam-Quality and High-Brightness 532 nm Laser with Output Power 96 W

Hongcai Liu,
Qingxuan Li,
Yu Ding,
Xuesheng Liu,
Jiapeng Hu,
Boyi Yang,
Youqiang Liu,
Zhiyong Wang

Affiliations

Hongcai Liu: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, China
Qingxuan Li: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, China
Yu Ding: Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin 300308, China
Xuesheng Liu: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, China
Jiapeng Hu: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, China
Boyi Yang: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, China
Youqiang Liu: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, China
Zhiyong Wang: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, China

DOI: https://doi.org/10.3390/cryst13020290
Journal volume & issue: Vol. 13, no. 2
p. 290

Abstract

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We developed a high-power, double-intracavity-frequency, diode-side-pumped, Q-switched Nd:YAG laser. The thermal birefringence effect of Nd:YAG crystal was compensated by a quartz rotating mirror, and the stable cavity structure was designed according to the thermal focal length of a single module. A 532 nm laser with a maximum linearly polarized output power of 96 W was obtained at a pumping power of 1300 W and repetition rate of 10 kHz. The pulse width was 55.8 ns, and the beam quality was measured to be M2x = 5.98, M2y = 8.14 at the maximum output power; therefore, a brightness as high as 6.97 × 108 W·cm−2·Sr was achieved. To the best of our knowledge, this is the highest brightness obtained for a high-power Nd:YAG laser at 532 nm.

Published in Crystals

ISSN: 2073-4352 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Crystallography
Website: http://www.mdpi.com/journal/crystals/

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