Simulation study on thermal analysis of laser gain medium under resonant pumping mechanism

Liwei Xu; Yingyi Li; Yu Ding; Jun Cai; Wanli Zhao; Tongyu Liu

doi:10.1117/12.3052876

12 December 2024 Simulation study on thermal analysis of laser gain medium under resonant pumping mechanism

Liwei Xu, Yingyi Li, Yu Ding, Jun Cai, Wanli Zhao, Tongyu Liu

Author Affiliations +

Proceedings Volume 13446, Sixth International Conference on Optoelectronic Science and Materials (ICOSM 2024); 134460C (2024) https://doi.org/10.1117/12.3052876
Event: 6th International Conference on Optoelectronic Science and Materials (ICOSM 2024), 2024, Hefei, China

Abstract

A simulation study on thermal analysis of laser gain medium was reported for resonant pump lasers. On the basis of analyzing the main sources of heat in the gain medium and the essence of reducing quantum losses through resonant pumping mechanism, this study considers the thermal conduction model of laser gain medium and proposes a simulation method for the internal thermal distribution of laser gain medium under resonant pumping mechanism, and compares it with traditional pumping mechanism. The simulation results show that using resonant pumping mechanism and appropriately increasing the pump spot can effectively reduce the thermal effect of the laser, which plays an important role in improving the conversion efficiency and beam quality of the laser. This simulation study is applicable to quasi continuous, Q-switched lasers pumped by semiconductor laser end faces.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Liwei Xu, Yingyi Li, Yu Ding, Jun Cai, Wanli Zhao, and Tongyu Liu "Simulation study on thermal analysis of laser gain medium under resonant pumping mechanism", Proc. SPIE 13446, Sixth International Conference on Optoelectronic Science and Materials (ICOSM 2024), 134460C (12 December 2024); https://doi.org/10.1117/12.3052876

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KEYWORDS

Nd:YAG lasers

Thermal effects

Optical simulations

Temperature distribution

Laser crystals

Solid state lasers

Thermal analysis

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