Low-Threshold Continuous-Wave Operation of Distributed-Feedback Quantum Cascade Laser at λ ∼ 4.6 μm

被引：17
|
作者：
Zhang, Jinchuan [1 ,2 ]
Wang, Lijun [1 ]
Tan, Song [1 ]
Liu, Wanfeng [1 ]
Zhao, Lihua [1 ]
Liu, Fengqi [1 ]
Liu, Junqi [1 ]
Li, Lu [1 ]
Wang, Zhanguo [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China
[2] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 18期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Distributed-feedback (DFB) devices; quantum cascade lasers (QCLs); semiconductor lasers; TEMPERATURE;
D O I：
10.1109/LPT.2011.2160621
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Room-temperature continuous-wave (CW) operation of distributed-feedback quantum cascade laser (DFB-QCL) emitting at 4.6 mu m is presented. Strain-compensation combined with two-phonon resonance in active region design promises low-threshold current density. A record low-threshold current density of 1 kA/cm (2) for DFB-QCL operated in CW mode at 30 degrees C is realized without a high-reflectivity coating on the rear facet. Reliable dynamic single-mode emission with a sidemode suppression ratio of about 30 dB is achieved from 10 to 50 degrees C.
引用
收藏
页码：1334 / 1336
页数：3
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