A Composite Cavity for Mode Control in Broad-Area Diode Laser

被引：2
|
作者：
Fan, Jian [1 ]
Zhou, Xuyan [1 ]
Fu, Ting [1 ]
Chen, Jingxuan [1 ]
Wang, Yufei [1 ]
Qu, Hongwei [1 ]
Qi, Aiyi [1 ]
Zheng, Wanhua [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Key Lab Solid State Optoelect Informat Technol, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 101408, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2022年 / 34卷 / 24期
基金：
中国国家自然科学基金;
关键词：
Laser modes; Laser beams; Semiconductor lasers; Measurement by laser beam; Current density; Microstructure; Lasers; High power laser; mode control; beam quality; high-order mode; HIGH-POWER;
D O I：
10.1109/LPT.2022.3215634
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A unstable cavity structure composed of the arc-shaped cavity, Fabry-Perot cavity, and sidewall saw-tooth microstructure is proposed to achieve mode selection in high-power broad-area diode laser with 980nm wavelength. In this cavity, the loss difference between the higher-order modes and the fundamental mode is increased to suppress the lasing of higher-order modes. The lateral divergence is reduced by about 28%. The number of modes in the near-field spot is reduced and the light intensity is concentrated towards the center of the Near-field profile. Also, the lateral beam parameter product decreases by 15%.
引用
收藏
页码：1353 / 1356
页数：4
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