Detection of a directly modulated terahertz light with quantum-well photodetector

被引：0

作者：

武庆钊 ^{[1
]}

顾立 ^{[1
]}

谭智勇 ^{[1
]}

王长 ^{[1
]}

曹俊诚 ^{[1
]}

机构：

[1] Key Laboratory of Terahertz Solid-State Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences

来源：

Chinese Optics Letters | 2014年 / 12卷 / 12期

基金：

中国国家自然科学基金;

关键词：

THz; QCL; Detection of a directly modulated terahertz light with quantum-well photodetector; well; link;

D O I：

暂无

中图分类号：

O441 [电磁学];

学科分类号：

0809 ;

摘要：

We demonstrate a wireless transmission link at 3.9 THz over a distance of 0.5 m by employing a terahertz(Hz) quantum-cascade laser(QCL) and a THz quantum-well photodetector(QWP). We make direct voltage modulation of the THz QCL and use a spectral-matched THz QWP to detect the modulated THz light from the laser. The small signal model and a direct voltage modulation scheme of the laser are presented. A square wave up to 30 MHz is added to the laser and detected by the THz detector. The bandwidth limit of the wireless link is also discussed.

引用

页码：6 / 9

页数：4

共 39 条

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