Effect of resonant cavity parameters on the self-excited oscillation for end-pumped Nd:YAG Q-switched laser

Caili Wang; Shiyong Xie; Yu Shi; Hua Cai; Jiao Lian; Tiezhu Bo; Chang Liu; Jing Ma; Shuaiqi Li; Tingqiao Zhao; Wenjing Qin

doi:10.1117/12.2687780

6 November 2023 Effect of resonant cavity parameters on the self-excited oscillation for end-pumped Nd:YAG Q-switched laser

Caili Wang, Shiyong Xie, Yu Shi, Hua Cai, Jiao Lian, Tiezhu Bo, Chang Liu, Jing Ma, Shuaiqi Li, Tingqiao Zhao, Wenjing Qin

Author Affiliations +

Proceedings Volume 12921, Third International Computing Imaging Conference (CITA 2023); 129210G (2023) https://doi.org/10.1117/12.2687780
Event: Third International Computing Imaging Conference (CITA 2023), 2023, Sydney, Australia

Abstract

The laser properties of 1064 nm pulse laser is investigated by optimizing the parameters of resonant cavity, such as mirror curvatures of resonant cavity, the transmission of the output coupler mirror. The results shows that the dynamic state energy and the static state energy increases with the increasing of pumping energy, while the dynamic static ratio decreases with the increasing of pumping energy. Because of the extremely high gain formed at the end-face of the laser with increasing the pump energy, it is easy to generate self-excited oscillation, which leads to the decreasing of the dynamic static ratio. The maximum static state energy with the mirror curvature of 1500 mm is larger than that with the mirror curvature of 1300 mm under the same pump energy. When the curvature of the output coupled mirror is 1500 mm, the dynamic state energy is 88.5 mJ and the dynamic static ratio is 73.0% under the pump energy of 489 mJ with a coupler of 48% transmission. When the transmission of the output coupler mirror increases to 55%, the maximum dynamic state energy is 89.4 mJ and the dynamic static ratio is 73.3% under the pump energy of 523 mJ.

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Caili Wang, Shiyong Xie, Yu Shi, Hua Cai, Jiao Lian, Tiezhu Bo, Chang Liu, Jing Ma, Shuaiqi Li, Tingqiao Zhao, and Wenjing Qin "Effect of resonant cavity parameters on the self-excited oscillation for end-pumped Nd:YAG Q-switched laser", Proc. SPIE 12921, Third International Computing Imaging Conference (CITA 2023), 129210G (6 November 2023); https://doi.org/10.1117/12.2687780

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KEYWORDS

Mirrors

Output couplers

Pulsed laser operation

Nd:YAG lasers

Q switched lasers

Optical transmission

Laser resonators

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