Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser

被引：36

作者：

Keeley, J. ^{[1
]}

Dean, P. ^{[1
]}

Valavanis, A. ^{[1
]}

Bertling, K. ^{[2
]}

Lim, Y. L. ^{[2
]}

Alhathlool, R. ^{[1
]}

Taimre, T. ^{[3
]}

Li, L. H. ^{[1
]}

Indjin, D. ^{[1
]}

Rakic, A. D. ^{[2
]}

Linfield, E. H. ^{[1
]}

Davies, A. G. ^{[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

[3] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

来源：

OPTICS LETTERS | 2015年 / 40卷 / 06期

基金：

澳大利亚研究理事会; 英国工程与自然科学研究理事会;

关键词：

LOCKING;

D O I：

10.1364/OL.40.000994

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate coherent three-dimensional terahertz imaging by frequency modulation of a quantum cascade laser in a compact and experimentally simple self-mixing scheme. Through this approach, we can realize significantly faster acquisition rates compared to previous schemes employing longitudinal mechanical scanning of a sample. We achieve a depth resolution of better than 0.1 mu m with a power noise spectral density below -50 dB/Hz, for a sampling time of 10 ms/pixel. (C) 2015 Optical Society of America

引用

页码：994 / 997

页数：4

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