Recent Advances in Room Temperature, High-Power Terahertz Quantum Cascade Laser Sources Based on Difference-Frequency Generation

被引：36

作者：

Lu, Quanyong ^{[1
]}

Razeghi, Manijeh ^{[1
]}

机构：

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

来源：

PHOTONICS | 2016年 / 3卷 / 03期

基金：

美国国家科学基金会;

关键词：

terahertz; quantum cascade lasers; difference frequency generation; distributed feedback;

D O I：

10.3390/photonics3030042

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present the current status of high-performance, compact, THz sources based on intracavity nonlinear frequency generation in mid-infrared quantum cascade lasers. Significant performance improvements of our THz sources in the power and wall plug efficiency are achieved by systematic optimizing the device's active region, waveguide, and chip bonding strategy. High THz power up to 1.9 mW and 0.014 mW for pulsed mode and continuous wave operations at room temperature are demonstrated, respectively. Even higher power and efficiency are envisioned based on enhancements in outcoupling efficiency and mid-IR performance. Our compact THz device with high power and wide tuning range is highly suitable for imaging, sensing, spectroscopy, medical diagnosis, and many other applications.

引用

页数：10

共 34 条

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