Compact Partially End-Pumped Innoslab Laser Based on Micro-Cylindrical Lens Array Homogenizer

Xinhui Sun; Xiaonan Zhao; Jinxin Chen; Yajun Wu; Yibin Fu; Gang Cheng; Xi Chen; Pan Liu; Linhao Shang; Guangqiang Fan; Huihui Gao; Yan Xiang; Tianshu Zhang

doi:10.3390/photonics11100932

Photonics (Oct 2024)

Compact Partially End-Pumped Innoslab Laser Based on Micro-Cylindrical Lens Array Homogenizer

Xinhui Sun,
Xiaonan Zhao,
Jinxin Chen,
Yajun Wu,
Yibin Fu,
Gang Cheng,
Xi Chen,
Pan Liu,
Linhao Shang,
Guangqiang Fan,
Huihui Gao,
Yan Xiang,
Tianshu Zhang

Affiliations

Xinhui Sun: Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
Xiaonan Zhao: Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
Jinxin Chen: Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
Yajun Wu: Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
Yibin Fu: Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
Gang Cheng: Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
Xi Chen: Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
Pan Liu: Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
Linhao Shang: Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
Guangqiang Fan: Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
Huihui Gao: Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
Yan Xiang: Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
Tianshu Zhang: Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China

DOI: https://doi.org/10.3390/photonics11100932
Journal volume & issue: Vol. 11, no. 10
p. 932

Abstract

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We demonstrate a compact, partially end-pumping Innoslab laser based on a micro-cylindrical lens array homogenizer. A dimension of 12 × 0.4 mm2 flat-top pumping line with a Gaussian intensity distribution across the line was simulated by the ray tracing technique. The rate equations considering the asymmetric transverse spatial distributions are theoretically developed. The simulation results are in good agreement with the experimental results. Preliminary data shows that for a pump power of 260 W, a maximum pulse energy of 15.7 mJ was obtained with a pulse width of 8.5 ns at a repetition frequency of 1 kHz. The beam quality M2 factors in the unstable and stable directions were 1.732 and 1.485, respectively. The technology has been successfully applied to temperature and humidity profiling lidar and ozone lidar and has been productized, yielding direct economic value.

Published in Photonics

ISSN: 2304-6732 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website: http://www.mdpi.com/journal/photonics

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