A co-simulation method for flowing diode pumped alkali lasers

Jiao Yang; Guofei An; Jiawei Guo; Qing Luo; He Cai; Juhong Han; Xiaoxu Liu; Dongdong Wang; You Wang

doi:10.1117/12.3015421

22 December 2023 A co-simulation method for flowing diode pumped alkali lasers

Jiao Yang, Guofei An, Jiawei Guo, Qing Luo, He Cai, Juhong Han, Xiaoxu Liu, Dongdong Wang, You Wang

Proceedings Volume 12974, Fifth International Symposium on High Power Laser Science and Engineering (HPLSE 2023); 129740L (2023) https://doi.org/10.1117/12.3015421
Event: Fifth International Symposium on High Power Laser Science and Engineering, 2023, Suzhou, China

Abstract

Due to the rapid performance of taking away the generated heat of a diode pumped alkali laser (DPAL) system, a flowing diode pumped alkali laser (FDPAL) is thought to be helpful to mitigate the thermal effects and improve the power scaling ability of a DPAL system during the power scaling period. In general, a relatively perfect theoretical model for a FDPAL needs to take the laser kinetic, heat transfer, and computational fluid dynamics (CFD) into account at the same time. Until now, the commercial finite element method (FEM) soft can only simulate the fluid and thermal distributions in an alkali vapor cell for a FDPAL. The laser kinetic can only be effectively calculated by a coding soft. Therefore, the multi-physics coupling problem needs to be firstly tackled at the beginning of a design for a FDPAL system. In the paper, a loop iteration based co-simulation method is utilized to solve the multi-physics coupling problem during the simulation of a FDPAL. The temperature and fluid corresponded parameters of a FDPAL are obtained by a FEM soft. The laser kinetic corresponded parameters of a FDPAL are got by a coding soft. By constructing a java language based server, the calculated data of such two kinds of soft can be shared. Then, a main iteration based procedure with preset initial values is coded to control the running behavior and communication of the two kinds of soft. After several or several ten times loop iteration, the laser power, temperature distribution, and velocity distribution of a FDPAL can be theoretically investigated. It has been demonstrated that the co-simulation based calculating results show a good agreement with the experiment results.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jiao Yang, Guofei An, Jiawei Guo, Qing Luo, He Cai, Juhong Han, Xiaoxu Liu, Dongdong Wang, and You Wang "A co-simulation method for flowing diode pumped alkali lasers", Proc. SPIE 12974, Fifth International Symposium on High Power Laser Science and Engineering (HPLSE 2023), 129740L (22 December 2023); https://doi.org/10.1117/12.3015421

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KEYWORDS

Temperature distribution

Semiconductor lasers

Finite element methods

Gases

Potassium

Rubidium

Thermal effects

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