Han, YJ orcid.org/0000-0003-2141-3077, Partington, J, Valavanis, A orcid.org/0000-0001-5565-0463 et al. (13 more authors) (2018) Broadband terahertz gas spectroscopy through multimode self-mixing in a quantum cascade laser. In: NATO Advance Research Workshop on Terahertz (Thz), Mid InfraRed (MIR) and Near InfraRed (NIR) Technologies for Protection of Critical Infrastructures against Explosives & CBRN, 05-09 Nov 2018, Liblice, Czech Republic.
Abstract
In the terahertz (THz) frequency range, CBRN agents and explosives have unique spectral signatures, which can be used for their identification and analysis. Quantum cascade lasers (QCLs) are important sources for spectroscopy within the 2–5 THz range, and self-mixing (SM) interference in a laser cavity enables the laser device to act both as a radiation source and as a coherent detector. This technique removes the need for additional detectors. Here, we present a SM spectroscopy technique, with an integrated frequency monitoring system and demonstrate the measurement of methanol spectral features simultaneously from two modes of a multi-mode THz QCL over a 17 GHz bandwidth.
Metadata
Item Type: | Conference or Workshop Item |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is the author's version of an abstract of a presentation made at the NATO Advance Research Workshop on Terahertz (Thz), Mid InfraRed (MIR) and Near InfraRed (NIR) Technologies for Protection of Critical Infrastructures against Explosives & CBRN. |
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) |
Funding Information: | Funder Grant number Centre for Earth Observation Instrumentation Not Known MRC MR/S015833/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 28 Oct 2019 14:44 |
Last Modified: | 28 Oct 2019 15:10 |
Status: | Published |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:152703 |