Rakić, AD, Taimre, T, Bertling, K et al. (11 more authors) (2014) THz QCL self-mixing interferometry for biomedical applications. In: Proceedings of SPIE - The International Society for Optical Engineering. Terahertz Emitters, Receivers, and Applications V, 17-18 Aug 2014, San Diego, California. Society of Photo-optical Instrumentation Engineers , 91990M - ?.
Abstract
In this paper, we introduce the self-mixing phenomenon in terahertz quantum cascade lasers (THz QCLs) and present recent advancements in the development of coherent THz imaging and sensing systems that exploit the self-mixing effect. We describe an imaging method which utilises the interferometric nature of optical feedback in a THz QCL to employ it as a homodyning transceiver. This results in a highly sensitive and compact scheme. Due to the inherently low penetration depth of THz radiation in hydrated biological tissue, imaging of superficial skin is an ideal application for this technique. We present results for imaging of excised skin tissue, showing high-contrast between different tissue types and pathologies.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © (2014) Society of Photo-Optical Instrumentation Engineers. Reproduced in accordance with the publisher's self-archiving policy.One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.2061433 |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Nov 2014 10:46 |
Last Modified: | 19 Dec 2022 13:28 |
Published Version: | http://dx.doi.org/10.1117/12.2061433 |
Status: | Published |
Publisher: | Society of Photo-optical Instrumentation Engineers |
Identification Number: | 10.1117/12.2061433 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:80880 |