红外与毫米波学报2022，Vol.41Issue(6)：958-964,7.DOI:10.11972/j.issn.1001-9014.2022.06.003
提高超大光腔波导结构半导体激光器功率效率的设计考虑
Design considerations to increase the power-efficiency of a supper-large-optical-cavity waveguide structure diode laser
摘要
Abstract
The considerations in the epitaxial and longitudinal design of a supper-large-optical-cavity structure di? ode laser in the 976-nm band are numerically studied and presented here. Mode control layers were designed un? derneath and up the quantum well layer to suppress the lasing of high-order transverse modes. The electron leak? age was suppressed by a band energy engineering,where the electron barrier increases from the p-waveguide layer to the p-cladding layer. The optimized structure has an internal loss of 0. 66 cm-1,an internal quantum efficiency of 0. 954,and a full width at half maximum vertical far-field angle of 17. 4°. For the resonant cavity design,a lin? er current profile along the cavity was proposed to reduce the longitudinal spatial hole burning effect,where a power penalty of 1. 0 W at 20 A is suppressed. The 4-mm-long and 100 μm wide broad-area single emitter with the supper-large-optical-cavity epitaxial structure was designed to have a high power-efficiency of about 71％at an output power of 21 W under continuous current injection at 25℃.关键词
量子阱激光器/超大光腔/载流子泄露/效率Key words
quantum-well lasers/supper-large-optical-cavity/carrier leakage/efficiency分类
数理科学引用本文复制引用
周坤,高松信,唐淳,何林安,李弋,贺钰雯,杜维川,刘晟哲,张亮,胡耀,宋梁..提高超大光腔波导结构半导体激光器功率效率的设计考虑[J].红外与毫米波学报,2022,41(6):958-964,7.基金项目
Supported by National Natural Science Foundation of China(11804322),the Innovation and Development Fund of CAEP(C-2020-CX2019035) （11804322）
