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Proceedings Paper

Thermal analysis of the direct pumping process in a 1064-nm monolithic non-planar ring oscillator Nd/YAG laser
Author(s): Weiping Deng; Yang Tao; Jianping Cao; Erjun Zang; Liufeng Li; Lisheng Chen; Zhanjun Fang
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Paper Abstract

A theoretical model is analyzed to evaluate the laser emission efficiency and the ratio of heat generation in the gain medium which are calculated by the output optical laser power vs the amount of absorbed power. During the lasing process, the total of absorbed power in the Nd:YAG crystal is obtained around 5.8-W with the 7.6-W incident power by measuring the thermal cooling power of the gain medium. The slope efficiency of the Nd:YAG NPRO laser is obtained of 78.7% experimentally, which approaches the quantum limit of 79% theoretically. This newly realized feature in the Nd:YAG NPRO laser allows for increased energy efficiency and hence less demanding on the heat management, a feature that is especially relevant to laser power upgrade in the ground-based gravitational wave detectors as well as developing laser sources for space-borne gravitational wave detectors.

Paper Details

Date Published: 6 November 2018
PDF: 7 pages
Proc. SPIE 10812, Semiconductor Lasers and Applications VIII, 108120W (6 November 2018); doi: 10.1117/12.2500063
Show Author Affiliations
Weiping Deng, Wuhan Institute of Physics and Mathematics (China)
Univ. of Chinese Academy of Sciences (China)
Yang Tao, National Institute of Metrology (China)
Jianping Cao, National Institute of Metrology (China)
Erjun Zang, National Institute of Metrology (China)
Liufeng Li, Wuhan Institute of Physics and Mathematics (China)
Lisheng Chen, Wuhan Institute of Physics and Mathematics (China)
Zhanjun Fang, National Institute of Metrology (China)

Published in SPIE Proceedings Vol. 10812:
Semiconductor Lasers and Applications VIII
Ning Hua Zhu; Werner H. Hofmann, Editor(s)

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