Single-Mode Surface Emitting Terahertz Quantum Cascade Lasers

被引:7
|
作者
Li, Y. Y. [1 ,2 ,3 ]
Zhao, F. Y. [1 ,2 ,3 ]
Liu, J. Q. [1 ,2 ,3 ]
Liu, F. Q. [1 ,2 ,3 ]
Zhang, J. C. [1 ,2 ]
Zhuo, N. [1 ,2 ]
Zhai, S. Q. [1 ,2 ]
Wang, L. J. [1 ,2 ,3 ]
Liu, S. M. [1 ,2 ,3 ]
Wang, Z. G. [1 ,2 ,3 ]
机构
[1] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China
[2] Beijing Key Lab Low Dimens Semicond Mat & Devices, Beijing 100083, Peoples R China
[3] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 101408, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
Terahertz; Quantum Cascade Lasers; Single-Mode; Distributed Feedback Gratings; DISTRIBUTED-FEEDBACK LASERS; PHASE-SHIFT; BEAM;
D O I
10.1166/jnn.2018.16061
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We present second-order grating surface-emitting terahertz quantum cascade lasers based on metal-metal waveguides. A maximum peak power of 12.2 mW is realized at 5 K in the pulsed mode, and the maximum operation temperature is 105 K. Stable single-mode emissions at similar to 89 mu m with a side-mode suppression ration at about 25 dB is achieved at all operating conditions. By inserting a central pi-phase shift in the device, a single-lobed far-field radiation pattern is obtained with a small divergence angle of 4 degrees in the cavity-length direction.
引用
收藏
页码:7554 / 7556
页数:3
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