Continuous operation of a monolithic semiconductor terahertz source at room temperature

被引：77

作者：

Lu, Q. Y. ^{[1
]}

Bandyopadhyay, N. ^{[1
]}

Slivken, S. ^{[1
]}

Bai, Y. ^{[1
]}

Razeghi, M. ^{[1
]}

机构：

[1] Northwestern Univ, Dept Elect Engn & Comp Sci, Ctr Quantum Devices, Evanston, IL 60208 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 22期

基金：

美国国家科学基金会;

关键词：

QUANTUM-CASCADE LASERS; GENERATION;

D O I：

10.1063/1.4881182

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate room temperature continuous wave THz sources based on intracavity difference-frequency generation from mid-infrared quantum cascade lasers. Buried ridge, buried composite distributed-feedback waveguide with Cerenkov phase-matching scheme is used to reduce the waveguide loss and enhance the heat dissipation for continuous wave operation. Continuous emission at 3.6 THz with a side-mode suppression ratio of 20 dB and output power up to 3 mu W are achieved, respectively. THz peak power is further scaled up to 1.4 mW in pulsed mode by increasing the mid-infrared power through increasing the active region doping and device area. (C) 2014 AIP Publishing LLC.

引用

页数：5

共 19 条

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