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Proceedings Paper

Performance of high-power diode lasers operated at cryogenic temperature
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Paper Abstract

High power diode lasers (HPDLs) have been applied in more and more fields, such as material processing, pumping of solid-state lasers and fiber lasers, medical therapy. With the improvement of output power, efficiency and reliability, thermal management has been one of most critical issue for HPDLs. The junction temperature of a diode laser package has critical effects on laser characteristics, affecting wavelength, output power, threshold current, slope efficiency, and operating lifetime. Lower junction temperature is an effective means to achieve high output power and high electrooptical conversion efficiency of diode lasers. In recent years, high-power diode lasers operated at cryogenic temperature have attracted academic interests. Herein, high power diode lasers suitable at cryogenic temperature and a measurement setup at cryogenic temperature have been developed. The optical-electrical performance of microchannel cooled high power diode lasers from 0℃ ~ -60℃ have been studied theoretically and experimentally. The output power increases 18% and the conversion efficiency increases 6.3% from 0 ºC to -60 ºC. The high diode laser bars operated at cryogenic will be applied in pumping high energy lasers in the future.

Paper Details

Date Published: 19 November 2019
PDF: 9 pages
Proc. SPIE 11182, Semiconductor Lasers and Applications IX, 111820L (19 November 2019); doi: 10.1117/12.2536712
Show Author Affiliations
Pu Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Mingpei Wang, Xi'an Institute of Optics and Precision Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Zhiqiang Nie, Xi'an Institute of Optics and Precision Mechanics (China)
Wuhao Yang, Xi'an Institute of Optics and Precision Mechanics (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 11182:
Semiconductor Lasers and Applications IX
Ning Hua Zhu; Werner H. Hofmann; Jian-Jun He, Editor(s)

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