Broad gain, continuous-wave operation of InP-based quantum cascade laser at λ ∼ 11.8 μm*

被引：3

作者：

Wang, Huan ^{[1
,2
]}

Zhang, Jin-Chuan ^{[1
]}

Cheng, Feng-Min ^{[1
,3
]}

Gu, Zeng-Hui ^{[1
,3
]}

Zhuo, Ning ^{[1
]}

Zhai, Shen-Qiang ^{[1
]}

Liu, Feng-Qi ^{[1
,2
,3
]}

Liu, Jun-Qi ^{[1
,2
]}

Liu, Shu-Man ^{[1
,2
]}

Wang, Zhan-Guo ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing Key Lab Low Dimens Semicond Mat & Devices, Beijing 100083, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China

来源：

CHINESE PHYSICS B | 2021年 / 30卷 / 12期

基金：

中国国家自然科学基金;

关键词：

dual-upper-state (DAU); quantum cascade lasers; external cavity; gas detection;

D O I：

10.1088/1674-1056/abf91a

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a broad gain, continuous-wave (CW) operation InP-based quantum cascade laser (QCL) emitting at 11.8 mu m with a modified dual-upper-state (DAU) and diagonal transition active region design. A 3 mm cavity length, 16.5 mu m average ridge wide QCL with high-reflection (HR) coatings demonstrates a maximum peak power of 1.07 W at 283 K and CW output power of 60 mW at 293 K. The device also shows a broad and dual-frequency lasing spectrum in pulsed mode and a maximum average power of 258.6 mW at 283 K. Moreover, the full width at half maximum (FWHM) of the electroluminescent spectrum measured at subthreshold current is 2.37 mu m, which indicates a broad gain spectrum of the materials. The tuning range of 1.38 mu m is obtained by a grating-coupled external cavity (EC) Littrow configuration, which is beneficial for gas detection.

引用

页数：5

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