Single-Mode Surface Emitting Terahertz Quantum Cascade Lasers

被引：6

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

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2018年 / 18卷 / 11期

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

页码：7554 / 7556

页数：3

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