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
收藏
页码：6 / 9
页数：4
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