Spatial and spectral filtering of tapered lasers by using tapered distributed Bragg reflector grating  

作　　者：Jing-Jing Yang Jie Fan Yong-Gang Zou Hai-Zhu Wang Xiao-Hui Ma 杨晶晶;范杰;邹永刚;王海珠;马晓辉(State Key Laboratory of High Power Semiconductor Laser,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]State Key Laboratory of High Power Semiconductor Laser,Changchun University of Science and Technology,Changchun 130022,China

出　　处：《Chinese Physics B》2022年第8期405-409,共5页中国物理B（英文版）

基　　金：Project supported by Jilin Science and Technology Development Plan,China(Grant Nos.20210201030GX and 20190302052GX)。

摘　　要：A 1040 nm tapered laser with tapered distributed Bragg reflector(DBR) grating is designed and fabricated. By designing the grating with tapered layout, the tapered DBR grating exhibits the scattering effect on side backward-traveling waves, thus achieving additional suppression of parasitic oscillation. Under the suppression of parasitic oscillation, the spatial and spectral characteristics of the tapered laser are improved. The experimental results show that a near-Gaussian far-field distribution and a kink-free P–I characteristics are achieved, and a single peak emission with a wavelength of1046.84 nm and a linewidth of 56 pm is obtained.

关 键 词：tapered lasers distributed Bragg reflector backward-traveling wave parasitic oscillation 

分 类 号：TN248[电子电信—物理电子学]