High environmental adaptability all⁃solid⁃state laser

doi:10.3969/j.issn.1007-5461.2023.06.006

Abstract

Abstract: An all-solid-state laser with high environment adaptability and high repetition frequency is designed to meet the application requirements of laser source for vehicle-mounted lidar. In terms of design, ABCD transmission matrix theory is used to calculate and analyze the resonant cavity, thus realizing the best mode matching between the pumping light and the oscillating light in the laser medium. In the experiment, glue stability test and local temperature control test are carried out to improve the stability of the resonator. By measuring the power stability of the laser under different working conditions such as high temperature, low temperature and vibration, it is proved that the laser has high environmental adaptability. It is demonstrated that based on air-cooled heat dissipation, the laser can achieve stable operation of the whole machine in the temperature range from −10 o C to 55 o C and under the condition of road spectrum vibration. Under the pump power of 8.31 W and acousto-optic Q-switched mode, a 532 nm green light output with pulse width of 7 ns, repetition frequency of 4 kHz, average power of 0.95 W and single pulse energy of 0.24 mJ is obtained, meeting the application requirements of mobile lidar.

Key words: laser techniques, pattern matching, intracavity frequency doubling, acousto-optic Q modulation, wide temperature range

CLC Number:

TN248.1

DUAN Danyang , DONG Yunsheng , ZHANG Tianshu , , LYU Lihui , FU Yibin , GAO Huihui , PEI Yongkang . High environmental adaptability all⁃solid⁃state laser[J]. Chinese Journal of Quantum Electronics, 2023, 40(6): 858-867.

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