Optical feedback effects on terahertz quantum cascade lasers: modelling and applications

被引：4

作者：

Rakic, Aleksandar D. ^{[1
]}

Lim, Yah Leng ^{[1
]}

Taimre, Thomas ^{[2
]}

Agnew, Gary ^{[1
]}

Qi, Xiaoqiong ^{[1
]}

Bertling, Karl ^{[1
]}

Han, She ^{[1
]}

Wilson, Stephen J. ^{[1
]}

Kundu, Iman ^{[3
]}

Grier, Andrew ^{[3
]}

Ikonic, Zoran ^{[3
]}

Valavanis, Alexander ^{[3
]}

Demic, Aleksandar ^{[3
]}

Keeley, James ^{[3
]}

Li, Lianhe H. ^{[3
]}

Linfield, Edmund H. ^{[3
]}

Davies, A. Giles ^{[3
]}

Harrison, Paul ^{[4
]}

Ferguson, Blake ^{[5
]}

Walker, Graeme ^{[5
]}

Prow, Tarl ^{[6
]}

Indjin, Dragan ^{[3
]}

Soyer, H. Peter ^{[6
]}

机构：

[1] Univ Queensland, Sch Informat Technol & Elect Engn, Brisbane, Qld 4072, Australia

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

[3] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England

[4] Sheffield Hallam Univ, Mat & Engn Res Inst, Sheffield S1 1WB, S Yorkshire, England

[5] Queensland Inst Med Res, Canc Program, Herston, Qld 4006, Australia

[6] Univ Queensland, Translat Res Inst, Sch Med, Dermatol Res Ctr, Brisbane, Qld 4102, Australia

来源：

INFRARED, MILLIMETER-WAVE, AND TERAHERTZ TECHNOLOGIES IV | 2016年 / 10030卷

基金：

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：

Terahertz imaging; Laser feedback interferometry; Quantum cascade lasers; Tissue imaging; FIBER RING LASER; SEMICONDUCTOR-LASERS; REFLECTION GEOMETRY; INTERFEROMETRY; TISSUE; SKIN; MODULATION; SPECTROSCOPY; FREQUENCIES; CARCINOMA;

D O I：

10.1117/12.2250621

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Terahertz (THz) quantum cascade lasers (QCLs) are compact sources of radiation in the 1-5 THz range with significant potential for applications in sensing and imaging. Laser feedback interferometry (LFI) with THz QCLs is a technique utilizing the sensitivity of the QCL to the radiation reflected back into the laser cavity from an external target. We will discuss modelling techniques and explore the applications of LFI in biological tissue imaging and will show that the confocal nature of the QCL in LFI systems, with their innate capacity for depth sectioning, makes them suitable for skin diagnostics with the well-known advantages of more conventional confocal microscopes. A demonstration of discrimination of neoplasia from healthy tissue using a THz, LFI-based system in the context of melanoma is presented using a transgenic mouse model.

引用

页数：12

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