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Development of High Power Annular Diode Laser Array Using Hard Solder
Hou, Dong1; Sun, Lichen1; Fu, Tuanwei1; Chen, Li1; Liang, Xuejie1; Cai, Lei1; Yang, Yan1; Wang, Jingwei1; Yan, Minna1; Zah, Chungen1; Liu, Xingsheng1,2
Conference NameConference on Components and Packaging for Laser Systems V
Conference Date2019-02-04
Conference PlaceSan Francisco, CA
Contribution Rank2

High power QCW diode laser stacks have been widely used in pumping applications for years. Different package structures of diode laser stacks are applied for pumping the cylindrical rod crystal, such as modular G-Stack, horizontal, vertical and annular arrays Annular array is preferred in pumping of QCW mode with low duty cycle and short pulse width, due to the advantage of compact structural size, uniform light beam distribution and convenient electric connection. However, the development of annular diode laser array using hard solder is difficult because of the complex bonding process of diode laser on annular heatsink with conventional bonding fixture. Furthermore the stress and thermal behavior is yet to be well studied on the annular diode laser array. In this work, a sophisticated annular diode laser array was developed using hard solder. Optimized structure and thermal design were conducted to achieve uniform light beam distribution and good heat dissipation. Stress release structure of diode laser stack is applied to reduce the risk of chip crack and deviation of spatial spectrum. The annular diode laser array consists of 44 bars in a ring, with the peak output power of each bar over 500W. The maximum output power of each bar reaches 673 W.

KeywordDiode Laser Stack Hard Solder High Power Stress Annular
Indexed ByEI ; CPCI
WOS IDWOS:000468808800006
EI Accession Number20192206988962
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Document Type会议论文
Corresponding AuthorHou, Dong
Affiliation1.Focuslight Technol Inc, 56 Zhangba 6th Rd, Xian 710077, Shaanxi, Peoples R China
2.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, 17 Xinxi Rd,New Ind Pk, Xian 710119, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Hou, Dong,Sun, Lichen,Fu, Tuanwei,et al. Development of High Power Annular Diode Laser Array Using Hard Solder[C]:SPIE,2019.
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