空气导热作用下Nd:YAG晶体温场特性

田晓; 齐兵

doi:10.3788/CO.20191203.0686

Volume 12 Issue 3

Jun. 2019

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Chinese Optics > 2019 > 12(3): 686-692.

TIAN Xiao, QI Bing. Temperature field of Nd: YAG crystal under air heat transfer[J]. Chinese Optics, 2019, 12(3): 686-692. doi: 10.3788/CO.20191203.0686

Citation:

TIAN Xiao, QI Bing. Temperature field of Nd: YAG crystal under air heat transfer[J]. Chinese Optics, 2019, 12(3): 686-692. doi: 10.3788/CO.20191203.0686

TIAN Xiao, QI Bing. Temperature field of Nd: YAG crystal under air heat transfer[J]. Chinese Optics, 2019, 12(3): 686-692. doi: 10.3788/CO.20191203.0686

Citation:

TIAN Xiao, QI Bing. Temperature field of Nd: YAG crystal under air heat transfer[J]. Chinese Optics, 2019, 12(3): 686-692. doi: 10.3788/CO.20191203.0686

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Temperature field of Nd: YAG crystal under air heat transfer

doi: 10.3788/CO.20191203.0686

TIAN Xiao^{1
,
,},
QI Bing²

1.
College of Science, Xi'an Aeronautical University, Xi'an 710077, China
2.
College of Science, Xi'an University of Science and Technology, Xi'an 710054, China

Funds:

Doctoral and Senior Talent Research Fund of Xi′an Aeronautical University 206011625

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Corresponding author: TIAN Xiao, E-mail:daisy_1005@126.com.cn
Received Date: 21 Aug 2018
Rev Recd Date: 12 Oct 2018
Publish Date: 01 Jun 2019

Abstract

Abstract

A thermal model was established under air conduction boundary conditions in order to accurately obtain the temperature distribution of an Nd:YAG rod crystal end-pumped with a laser diode. Firstly, the crystal's temperature distribution was calculated through analytical theory on the basis of the heat conduction equation. The crystal was operated with a pump diode laser incident center operating at a wavelength of 808 nm. Secondly, the influences of the pump laser parameters, including power, beam radius and orders of super Guass were quantitatively analyzed. The results indicate that the maximum temperature rise is located at the center of the pump end and its value can rise to 426.3 K when an Nd:YAG rod crystal with length of 5 mm and a radius of 1.5 mm is pumped by a 808 nm laser with 60 W power and spot radius of 400 μm. The thermal focal length of the crystal is 272.98 mm. The effects of the thermal air transfer on the temperature field distribution of the crystal are considered and the results are therefore more accurate. This research can provide a method for further precise analysis of the temperature field distribution of other laser crystals and lays a theoretical foundation for the optimization of laser performance.
- laser,
- crystal temperature field,
- analytic method,
- Nd:YAG rod crystal,
- heat effect

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References(16)

References

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