Surface Emitting Distributed Feedback Quantum Cascade Laser around 8.3 μm

被引：3

作者：

Guo Wan-Hong ^{[1
]}

Liu Jun-Qi ^{[1
]}

Lu Quan-Yong ^{[1
]}

Zhang Wei ^{[1
]}

Jiang Yu-Chao ^{[1
]}

Li Lu ^{[1
]}

Wang Li-Jun ^{[1
]}

Liu Feng-Qi ^{[1
]}

Wang Zhan-Guo ^{[1
]}

机构：

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

来源：

CHINESE PHYSICS LETTERS | 2010年 / 27卷 / 11期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

PHOTONIC-CRYSTAL; EMISSION;

D O I：

10.1088/0256-307X/27/11/114214

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate surface emitting distributed feedback quantum cascade lasers emitting at wavelengths from 8.1 mu m at 90 K to 8.4 mu m at 210 K. The second-order metalized grating is carefully designed using a modified coupled-mode theory and fabricated by contact lithography. The devices show single mode behavior with a side mode suppression ratio above 18 dB at all working temperatures. At 90 K, the device emits an optical power of 101 mW from the surface and 199 mW from the edge. In addition, a double-lobe far-field pattern with a separation of 2.2 degrees is obtained in the direction along the waveguide.

引用

页数：4

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