Numerical simulation for the thermal recovery of N51-type phosphate laser glass for high power laser applications

Jixi Xu; Xin Wang; Yujing Shen; Wei Chen; Shubin Chen; Lili Hu

doi:10.1117/12.2598927

6 June 2021 Numerical simulation for the thermal recovery of N51-type phosphate laser glass for high power laser applications

Jixi Xu, Xin Wang, Yujing Shen, Wei Chen, Shubin Chen, Lili Hu

Author Affiliations +

Proceedings Volume 11849, Fourth International Symposium on High Power Laser Science and Engineering (HPLSE 2021); 118490V (2021) https://doi.org/10.1117/12.2598927
Event: Fourth International Symposium on High Power Laser Science and Engineering (HPLSE 2021), 2021, Suzhou, China

Abstract

N51-type Nd-doped phosphate laser glass is recently developed at Shanghai Institute of Optics and Fine Mechanics, China, especially for high-power laser applications. One multiphysics model is utilized to simulate the thermal recovery process of a single large-sized N51 amplifier, 810×460×40 mm³ slab with 12 mm thick edge cladding. The change of the average temperature with time, as well as the temperature at five points located at the center, long and short edge side, corner of the laser slab, and center of the edge cladding, are numerically simulated and discussed. On the thermal recovery, the slab equilibration time and the self-equilibration time are determined by the average temperature and the maximum temperature difference with a function of recovery time, respectively. For the whole slab, the temperature distribution, temperature gradient distribution, and thermal stress distribution during the thermal recovery process after a single but strong pumping are also numerically simulated by the transient-analysis method. Based on these numerical data of the N51 laser slab, it is suggested that N51 would be applied in high power laser systems with a better thermal recovery performance, as well as a higher stimulated emission cross section.

Citation Download Citation

Jixi Xu, Xin Wang, Yujing Shen, Wei Chen, Shubin Chen, and Lili Hu "Numerical simulation for the thermal recovery of N51-type phosphate laser glass for high power laser applications", Proc. SPIE 11849, Fourth International Symposium on High Power Laser Science and Engineering (HPLSE 2021), 118490V (6 June 2021); https://doi.org/10.1117/12.2598927

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