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research
Optical feedback effects on terahertz quantum cascade lasers: modelling and applications
Authors
Gary Agnew
Karl Bertling
+20 more
A. Giles Davies
Aleksandar Demic
Blake Ferguson
Andrew Grier
She Han
Paul Harrison
Zoran Ikonic
Dragan Indjin
James Keeley
Iman Kundu
Lianhe H. Li
Yah Leng Lim
Edmund H. Linfield
Tarl Prow
Xiaoqiong Qi
Aleksander D. Rakic
H. Peter Soyer
Thomas Taimre
Alexander Valavanis
Graeme Walker
Publication date
8 December 2016
Publisher
'SPIE-Intl Soc Optical Eng'
Doi
Cite
Abstract
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. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only
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oai:eprints.whiterose.ac.uk:10...
Last time updated on 02/02/2017
Sheffield Hallam University Research Archive
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oai:shura.shu.ac.uk:14294
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info:doi/10.1117%2F12.2250621
Last time updated on 11/12/2019