Terahertz imaging through self-mixing in a quantum cascade laser

被引:142
|
作者
Dean, Paul [1 ]
Lim, Yah Leng [2 ]
Valavanis, Alex [1 ]
Kliese, Russell [2 ]
Nikolic, Milan [2 ]
Khanna, Suraj P. [1 ]
Lachab, Mohammad [1 ]
Indjin, Dragan [1 ]
Ikonic, Zoran [1 ]
Harrison, Paul [1 ]
Rakic, Aleksandar D. [2 ]
Linfield, Edmund H. [1 ]
Davies, A. Giles [1 ]
机构
[1] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England
[2] Univ Queensland, Sch Informat Technol & Elect Engn, Brisbane, Qld 4072, Australia
基金
欧洲研究理事会; 英国工程与自然科学研究理事会; 澳大利亚研究理事会;
关键词
ARRAY;
D O I
10.1364/OL.36.002587
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate terahertz (THz) frequency imaging using a single quantum cascade laser (QCL) device for both generation and sensing of THz radiation. Detection is achieved by utilizing the effect of self-mixing in the THz QCL, and, specifically, by monitoring perturbations to the voltage across the QCL, induced by light reflected from an external object back into the laser cavity. Self-mixing imaging offers high sensitivity, a potentially fast response, and a simple, compact optical design, and we show that it can be used to obtain high-resolution reflection images of exemplar structures. (C) 2011 Optical Society of America
引用
收藏
页码:2587 / 2589
页数:3
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