996 nm high-power single-longitudinal-mode tapered gain-coupled distributed feedback laser diodes

被引：10
|
作者：
Lei, Yuxin [1 ,2 ]
Chen, Yongyi [1 ]
Gao, Feng [1 ]
Ma, Dezheng [1 ,2 ]
Jia, Peng [1 ]
Wu, Hao [1 ]
Ruan, Chunkao [1 ,2 ]
Liang, Lei [1 ]
Chen, Chao [1 ]
Zhang, Jun [1 ]
Qin, Li [1 ]
Ning, Yongqiang [1 ]
Wang, Lijun [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
APPLIED OPTICS | 2019年 / 58卷 / 23期
基金：
中国国家自然科学基金;
关键词：
DFB LASERS; SEMICONDUCTOR-LASER; LINEWIDTH;
D O I：
10.1364/AO.58.006426
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A high-power single-longitudinal-mode regrowth-free tapered gain-coupled distributed feedback laser diode based on periodic current injection is achieved at 996 nm. It enhances the output power without beam quality degrading. A continuous-wave output power of over 1.12 W is achieved at 3 A. The maximum output power in single-longitudinal-mode operation is up to 0.56 W at 1.4 A. The power conversion efficiency is over 24%, and the slope efficiency is 0.58 W/A. The side mode suppression ratio is over 38 dB; the 3 dB spectral linewidth is less than 2.4 pm. The lateral far-field divergence angle is only 14.98 degrees, and the beam quality factor M-2 is 1.64, achieving a near-diffraction-limit emission. Our device has great potential in commercial applications and the experimental study of high-power near-diffraction-limit laser diodes for its low-cost fabrication technique and narrowband single-longitudinal-mode emission at high power. (C) 2019 Optical Society of America
引用
收藏
页码：6426 / 6432
页数：7
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