Mosley, C.D.W. orcid.org/0000-0002-0084-9261, Tucker, R., Nixon, J.P.R. et al. (7 more authors) (2024) Asynchronous optical sampling of on-chip terahertz devices for real-time sensing and imaging applications. Optics Express, 32 (16). pp. 27940-27949. ISSN 1094-4087
Abstract
We demonstrate that asynchronous optical sampling (ASOPS) can be used to measure the propagation of terahertz (THz) bandwidth pulses in a coplanar waveguide device with integrated photoconductive switches used for signal excitation and detection. We assess the performance of the ASOPS technique as a function of measurement duration, showing the ability to acquire full THz time-domain traces at rates up to 100 Hz. We observe a peak dynamic range of 40 dB for the shortest measurement duration of 10 ms, increasing to 88 dB with a measurement time of 500 s. Our work opens a route to real-time video-rate imaging via modalities using scanned THz waveguides, as well as real-time THz sensing of small volume analytes; we benchmark our on-chip ASOPS measurements against previously published simulations of scanning THz sensor devices, demonstrating sufficient dynamic range to underpin future video-rate THz spectroscopy measurements with these devices.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Journal © 2024. Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. |
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) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/V004743/1 EPSRC (Engineering and Physical Sciences Research Council) EP/H007881/1 Leverhulme Trust F/00 122/AM EPSRC (Engineering and Physical Sciences Research Council) EP/D50225X/1 EPSRC (Engineering and Physical Sciences Research Council) EP/V047914/1 EPSRC (Engineering and Physical Sciences Research Council) EP/R00501X/1 EPSRC (Engineering and Physical Sciences Research Council) EP/P001394/1 EPSRC (Engineering and Physical Sciences Research Council) EP/W028921/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Jul 2024 10:03 |
Last Modified: | 24 Jan 2025 12:41 |
Status: | Published |
Publisher: | Optica Publishing Group |
Identification Number: | 10.1364/oe.529890 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:214974 |