Keeley, J orcid.org/0000-0001-5251-6648, Dean, P orcid.org/0000-0002-3950-4359, Valavanis, A orcid.org/0000-0001-5565-0463 et al. (9 more authors) (2015) Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser. Optics Letters, 40 (6). pp. 994-997. ISSN 1539-4794
Abstract
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 μm with a power noise spectral density below −50 dB/Hz, for a sampling time of 10 ms/pixel.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.40.000994 Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
Keywords: | Coherence imaging; Three-dimensional image acquisition; Semiconductor lasers, quantum cascade; Terahertz imaging; Semiconductor lasers |
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: | 13 Mar 2015 16:33 |
Last Modified: | 14 Feb 2019 13:00 |
Published Version: | http://dx.doi.org/10.1364/OL.40.000994 |
Status: | Published |
Publisher: | Optical Society of America |
Identification Number: | 10.1364/OL.40.000994 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83440 |