A high-performance annularly stacked laser diode pump for a solid state laser

Junli Li; Lichen Sun; Ming Liu; Yang Han; Tuanwei Fu; Lei Cai; Yanfang Zheng; Minna Yan; Juan Wang; Chunhua Tao; Lijun Gao; Jingwei Wang; Chungen Zah; Xingsheng Liu

doi:10.1117/12.2573534

10 October 2020 A high-performance annularly stacked laser diode pump for a solid state laser

Junli Li, Lichen Sun, Ming Liu, Yang Han, Tuanwei Fu, Lei Cai, Yanfang Zheng, Minna Yan, Juan Wang, Chunhua Tao, Lijun Gao, Jingwei Wang, Chungen Zah, Xingsheng Liu

Author Affiliations +

Proceedings Volume 11545, Semiconductor Lasers and Applications X; 115450J (2020) https://doi.org/10.1117/12.2573534
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

A high peak power annularly-stacked laser diode pump has been designed and manufactured for a solid state laser (SSL), which is constructed by 12 single annular stacks composed of 3-bar laser diode (LD) submodules. High peak power and high wavelength uniformity have been considered. Macro channel cooling has been used during the operation of the annular stacks, at typical coolant flow rate of 2L/min. Heat dissipation and stress of a single annular stack have been simulated by finite element software, which shows high temperature uniformity of 3-bar submodules (plus or minus 0.5℃) and low package stress (11.8MP). The peak power of the annularly stacked laser diode pump has reached 234kW at a peak current of 450A or less. A high uniformity of centroid wavelength (802 plus or minus1nm) with a full width at half maximum (FWHM) of 4nm has been measured. More than 24 million shots have been verified for the 3-bar LD submodules.

Conference Presentation

Citation Download Citation

Junli Li, Lichen Sun, Ming Liu, Yang Han, Tuanwei Fu, Lei Cai, Yanfang Zheng, Minna Yan, Juan Wang, Chunhua Tao, Lijun Gao, Jingwei Wang, Chungen Zah, and Xingsheng Liu "A high-performance annularly stacked laser diode pump for a solid state laser", Proc. SPIE 11545, Semiconductor Lasers and Applications X, 115450J (10 October 2020); https://doi.org/10.1117/12.2573534

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