High-brightness green laser diode that uses a multi-order half-wave plate to realize twice-combined polarized beams

Ziming Liu; Wenbin Qin; Zhuang Jin; Youqiang Liu; Menghua Jiang; Yinhua Cao; Zhiyong Wang

Results in Physics (Aug 2023)

High-brightness green laser diode that uses a multi-order half-wave plate to realize twice-combined polarized beams

Ziming Liu,
Wenbin Qin,
Zhuang Jin,
Youqiang Liu,
Menghua Jiang,
Yinhua Cao,
Zhiyong Wang

Affiliations

Ziming Liu: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing, 100124, China; Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing, 100124, China; Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
Wenbin Qin: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing, 100124, China; Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing, 100124, China; Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China; Corresponding author at: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing, 100124, China.
Zhuang Jin: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing, 100124, China; Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing, 100124, China; Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
Youqiang Liu: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing, 100124, China; Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing, 100124, China; Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
Menghua Jiang: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing, 100124, China; Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing, 100124, China; Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
Yinhua Cao: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing, 100124, China; Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing, 100124, China; Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
Zhiyong Wang: Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing, 100124, China; Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing, 100124, China; Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China

Journal volume & issue: Vol. 51
p. 106639

Abstract

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In this paper, we describe a method for realizing twice-combined polarized beams by selectively changing the polarization state of lasers with different wavelengths. This improves the output power and brightness of a green laser diode system. A multi-order half-wave plate plays a significant part in combining the polarization states of the first-combined polarized beam by changing the polarization state from orthogonal to approximately parallel. We obtained a maximum output power of 2.85 W and a laser brightness of 25.36 MW/cm2·sr with an optical–optical conversion efficiency of 82.85% and a spectral width of 15.48 nm. Compared with traditional methods for combining polarized beams, the output power is improved by 22.85% and the brightness by 8.65%. This structure provides a new technology for achieving high output power and high brightness from a green laser diode system, and it breaks through the limit of the number of laser units that can be used in combining polarized beams.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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