Continuous-Wave Operation of Terahertz Quantum Cascade Lasers at 3.2 THz

被引：7
|
作者：
Wang Tao [1 ]
Liu Jun-Qi [1 ]
Chen Jian-Yan [1 ]
Liu Ying-Hui [1 ]
Liu Feng-Qi [1 ]
Wang Li-Jun [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 | 2013年 / 30卷 / 06期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1088/0256-307X/30/6/064201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We demonstrate continuous-wave (cw) operation of terahertz (THz) quantum cascade lasers emitting at 3.2 THz based on bound-to-continuum active region and semi-insulating surface-plasmon waveguide design. Optical power of 62mW with a threshold current density of 285 A/cm(2) is obtained at 10K from a 130-mu m-wide and 1.5-mm-long laser in cw operation. Maximum cw operation temperature is up to 60 K. In pulsed mode, peak optical power more than 100mW at 10K and 2.1mW at 85K are observed from a 230-mu m-wide and 2-mm-long device.
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页数：4
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