High-Power Single-Spatial-Mode GaSb Tapered Laser around 2.0 μm with Very Small Lateral Beam Divergence  

作　　者：黄书山 张宇 廖永平 杨成奥 柴小力 徐应强 倪海桥 牛智川 

机构地区：[1]State Key Laboratory of Superlattices and Microstructures,Institute of Semiconductors,Chinese Academy of Sciences [2]College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences [3]Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China

出　　处：《Chinese Physics Letters》2017年第8期59-62,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant Nos 2014CB643903 and 2013CB932904;the National Natural Science Foundation of China under Grant Nos 61435012 and 61290303;the Strategic Priority Research Program(B) of the Chinese Academy of Sciences under Grant No XDB01010200

摘　　要：We report high-power single-spatial-mode type-I GaSb-based tapered lasers fabricated on the InGaSb/AlGaAsSb material system. A straight ridge and three different tapered waveguide structures with varying flare angles are fabricated to optimize the output power and spatial-mode performance. The best devices exhibit single-spatial-mode operation with room-temperature output power up to 350？mW in continuous-wave mode at an emission wavelength around 2.0？μm with a very small far-field lateral divergence angle, which is beyond state of the art in terms of single-spatial-mode output power.We report high-power single-spatial-mode type-I GaSb-based tapered lasers fabricated on the InGaSb/AlGaAsSb material system. A straight ridge and three different tapered waveguide structures with varying flare angles are fabricated to optimize the output power and spatial-mode performance. The best devices exhibit single-spatial-mode operation with room-temperature output power up to 350？mW in continuous-wave mode at an emission wavelength around 2.0？μm with a very small far-field lateral divergence angle, which is beyond state of the art in terms of single-spatial-mode output power.

关 键 词：High-Power Single-Spatial-Mode GaSb Tapered Laser around 2.0 m with Very Small Lateral Beam Divergence 

分 类 号：TN248[电子电信—物理电子学]