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Proceedings Paper

Analysis of the thermal effect in diode end-pumped Er:YAG lasers by using Finite Element Method
Author(s): Yujia Wang; Qing Wang; QuanXin Na; Yixuan Zhang; Mingwei Gao; Meng Zhang
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Paper Abstract

A new method for combining Finite Element Method (FEM) thermal analysis and thermo-mechanical coupling method for calculating the thermal lensing values in diode end-pumped Er:YAG lasers is proposed. A finite-element model is used to simulate the thermal effects in different Er:YAG crystals with pumping scenarios. The influences of pump powers, crystal absorption coefficients and crystal sizes on the Er:YAG thermal effects are discussed, and the relationship between the thermal effects and thermal lensing effects is analysed. A thermo-mechanical coupling model is also constituted for finite-element analysis based on the above results, and the focal length of the Er:YAG crystal with different pump powers are obtained by using this thermo-mechanical coupling model. The predicted thermal lensing values are compared with experimental results, which agree well with the simulated results.

Paper Details

Date Published: 12 January 2018
PDF: 10 pages
Proc. SPIE 10619, 2017 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 1061906 (12 January 2018); doi: 10.1117/12.2295879
Show Author Affiliations
Yujia Wang, Beijing Institute of Technology (China)
Qing Wang, Beijing Institute of Technology (China)
QuanXin Na, Beijing Institute of Technology (China)
Yixuan Zhang, Beijing Institute of Technology (China)
Mingwei Gao, Beijing Institute of Technology (China)
Meng Zhang, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 10619:
2017 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications
Zhiyi Wei; Chunqing Gao; Pu Wang; Franz X. Kärtner; Jayanta Kumar Sahu; Liquan Dong, Editor(s)

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