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A method of designing water-cooled horizontal array diode lasers for uniform junction temperature
Wu, Di-Hai1,3; Zah, Chung-En2; Liu, Xingsheng1,2
2018
Conference NameSemiconductor Lasers and Applications VIII 2018
Source PublicationSemiconductor Lasers and Applications VIII
Volume10812
Conference Date2018-10-12
Conference PlaceBeijing, China
PublisherSPIE
Contribution Rank1
AbstractHigh power water-cooled horizontal array diode lasers are critical components in laser cutting systems for the compact line beam shape. Because of heat spreading effect of heatsink and thermal crosstalk effect among the laser bars, local thermal resistance for each bar is different, leading to unhomogeneous output power for each bar and non-uniform intensity distribution for laser line beam. In this paper, heat transfer and pressure drop as function of water flow rate in a single bent microchannel is firstly studied by computational fluid dynamics. For reaching same local thermal resistance, numerical simulation is used to determine local heat transfer coefficient (HTC) distribution for microchannels within the horizontal array heatsink. The water inlet or outlet structure respectively in the upstream and downstream of distributed channels is designed to compensate the distributed pressure drop so that each flow path from inlet to outlet has same pressure drop. This work gave the basic thermal design rule for horizontal array diode lasers to reach uniform junction temperature. © 2018 SPIE.
Department瞬态光学技术国家重点实验室
DOI10.1117/12.2500701
Indexed ByEI
ISBN9781510622227
Language英语
ISSN0277786X;1996759X
EI Accession Number20185106258802
Citation statistics
Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/31117
Collection瞬态光学技术国家重点实验室
Corresponding AuthorLiu, Xingsheng
Affiliation1.State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17 Xinxi Road, Xi'an High-Tech Zone, Xi'an, Shaanxi; 710119, China;
2.Focuslight Technologies Inc., 56 Zhangba 6th Road, Xi'an High-Tech Zone, Xi'an, Shaanxi; 710077, China;
3.University of Chinese Academy of Sciences, No. 19 Yuquan Road, Shijingshan District, Beijing; 100049, China
Recommended Citation
GB/T 7714
Wu, Di-Hai,Zah, Chung-En,Liu, Xingsheng. A method of designing water-cooled horizontal array diode lasers for uniform junction temperature[C]:SPIE,2018.
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