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

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...

Full description

Saved in:
Bibliographic Details
Published inChinese physics letters Vol. 34; no. 8; pp. 59 - 62
Main Author 黄书山 张宇 廖永平 杨成奥 柴小力 徐应强 倪海桥 牛智川
Format Journal Article
LanguageEnglish
Published 01.07.2017
Subjects
GaSb
光束发散角
模式化
激光器
空间模式
输出功率
锥形
高功率
Online AccessGet full text
ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/34/8/084202

Cover

More Information
Summary: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.
Bibliography:Shu-Shan Huang1,2,3, Yu Zhang1,2,3, Yong-Ping Liao1,2,3, Cheng-Ao Yang1,2,3, Xiao-Li Chai1,2,3, Ying-Qiang Xu1,2,3, Hai-Qiao Ni1,2,3, Zhi-Chuan Niu1,2,3（1.State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083;2.College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049;3.Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026）
11-1959/O4
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.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/34/8/084202