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Suppression of far-field blooming in high-power broad-area diode lasers by optimizing gain distribution

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Abstract

Far-field blooming, a serious far-field dependence on driving current, affects the stability of beam quality and applications of broad-area (BA) diode lasers. In this Letter, the lateral ridge waveguide (LRW) is introduced to BA lasers by a simple and cost-effective approach to control the far-field stability and beam divergence. The influences of LRW length on output power, near- and far-field, are investigated and it is found that the optimized LRW length is able to improve both the far-field blooming and output power. The mechanism behind this is analyzed and a 0.13°/A dependence of lateral divergence angle on the injection current is achieved.<录用日期>2017-04-07<上网时间>2017-04-20

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DOI:10.3788/col201715.071404

所属栏目:Lasers and laser optics

基金项目:This work was supported by the National Natural Science Foundation of China (Nos. 61404138 and 61474119), the National Basic Research Program of China (No. 2013CB933303), the International Science Technology Cooperation Program of China (No. 2013DFR00730), and the Opened Fund of the State Key Laboratory on Integrated Optoelectronics (No. IOSKL2016KF15).

收稿日期:2017-02-27

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Tao Wang:State Key laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, China
Lijie Wang:State Key laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Shili Shu:State Key laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Sicong Tian:State Key laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Zhide Zhao:Suzhou Everbright Photonics Co., Ltd, Suzhou 215000, China
Cunzhu Tong:State Key laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Lijun Wang:State Key laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

联系人作者:tongcz@ciomp.ac.cn;

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引用该论文

Tao Wang, Lijie Wang, Shili Shu, Sicong Tian, Zhide Zhao, Cunzhu Tong, Lijun Wang, "Suppression of far-field blooming in high-power broad-area diode lasers by optimizing gain distribution," Chinese Optics Letters 15(7), 071404 (2017)

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