Thermal effects analysis of end-pumped Er:YAG rod and slab by using finite element method

Fangfang Hou, Chunqing Gao*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The temperature and thermal stress distributions of end-pumped Er: YAG rod and slab are analyzed by using the finite element method. A thermal-structural coupling model is established for the thermal effects analysis of the crystal based on the steady heat conduction theory. The influences of the crystal structure parameters on the thermal effects inside the Er:YAG slabs and rods are discussed. The analysis results show that the slab structure can effectively improve the thermal distribution performance of the laser medium under the same clear aperture and pumping conditions, compared with the rod crystal. In addition, the thermal effects can be further reduced by increasing the width-to-thickness ratio of the slab. It is also found that a well-designed gradient doping technology can efficiently reduce thermal effects, resulting in the higher output power and beam quality than that in the uniform doping Er: YAG crystal.

Original languageEnglish
Title of host publication2019 International Conference on Optical Instruments and Technology
Subtitle of host publicationAdvanced Laser Technology and Applications
EditorsZhiyi Wei, Chunqing Gao, Pu Wang, Franz X. Kartner, Franz X. Kartner, Stefan A. Weber
PublisherSPIE
ISBN (Electronic)9781510636521
DOIs
Publication statusPublished - 2020
Event2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications - Beijing, China
Duration: 26 Oct 201928 Oct 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11437
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications
Country/TerritoryChina
CityBeijing
Period26/10/1928/10/19

Keywords

  • End-pumped
  • Er:YAG crystal
  • Finite Element Method
  • Gradient doping
  • Thermal effects

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Hou, F., & Gao, C. (2020). Thermal effects analysis of end-pumped Er:YAG rod and slab by using finite element method. In Z. Wei, C. Gao, P. Wang, F. X. Kartner, F. X. Kartner, & S. A. Weber (Eds.), 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications Article 1143709 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11437). SPIE. https://doi.org/10.1117/12.2542737