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Rapid imaging of pulsed terahertz radiation with spatial light modulators and neural networks

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Stantchev, Rayko Ivanov, Li, Kaidi and Pickwell-MacPherson, Emma (2021) Rapid imaging of pulsed terahertz radiation with spatial light modulators and neural networks. ACS Photonics, 8 (11). pp. 3150-3155. doi:10.1021/acsphotonics.1c00634 ISSN 2330-4022.

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Official URL: http://dx.doi.org/10.1021/acsphotonics.1c00634

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Abstract

We report the first use of a convolutional neural network for terahertz (THz) imaging combined with a single-pixel camera to achieve high quality hyperspectral THz imaging 10× faster than the current commercial systems, with faster potential only limited by noise. Imaging with a spatial light modulator (SLM) relies on projecting a set of spatial patterns onto an object and recording the transmission with a single-pixel detector, and an optical delay unit (ODU) is used to obtain the terahertz time-of-flight information. A key breakthrough in this work is to synchronize the equipment to not need any time to instruct the ODU to move while projecting the patterns.

Item Type: Journal Article
Subjects: Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software
Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Terahertz technology, Diagnostic imaging, Terahertz spectroscopy , Wireless communication systems, Light modulators, Time-domain analysis, Neural networks (Computer science)
Journal or Publication Title: ACS Photonics
Publisher: American Chemical Society (ACS)
ISSN: 2330-4022
Official Date: 17 November 2021
Dates:
DateEvent
17 November 2021Published
1 November 2021Available
9 September 2021Accepted
Volume: 8
Number: 11
Page Range: pp. 3150-3155
DOI: 10.1021/acsphotonics.1c00634
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acsphotonics.1c00634
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 4 November 2021
Date of first compliant Open Access: 1 November 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
14206717Research Grants Council of Hong KongUNSPECIFIED
14201415Research Grants Council of Hong KongUNSPECIFIED
ITS/371/16Innovation and Technology Commissionhttp://dx.doi.org/10.13039/501100003452
EP/S021442/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
Wolfson Merit AwardRoyal Societyhttp://dx.doi.org/10.13039/501100000288

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