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Scalable interdigitated photoconductive emitters for the electrical modulation of terahertz beams with arbitrary linear polarization

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Mosley, C. D. W., Staniforth, Michael, Serrano, A. I. Hernandez, Pickwell-MacPherson, Emma and Lloyd-Hughes, James (2019) Scalable interdigitated photoconductive emitters for the electrical modulation of terahertz beams with arbitrary linear polarization. AIP Advances, 9 (4). 045323. doi:10.1063/1.5086428 ISSN 2158-3226.

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Official URL: http://dx.doi.org/10.1063/1.5086428

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Abstract

A multi-element interdigitated photoconductive emitter for broadband THz polarization rotation is proposed and experimentally verified. The device consists of separate pixels for the emission of horizontally and vertically polarized THz radiation. The broadband (0.3–5.0 THz) nature of the device is demonstrated, and the polarization angle of the generated far-field THz radiation is shown to be readily controlled by varying the relative bias voltage applied to the horizontally and vertically emitting pixels. The device is scalable in design, and with its simple method of polarization rotation it allows the modulation of the generated THz polarization at rates significantly faster than those achievable in ellipsometry systems based on mechanically rotating components.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Science > Chemistry
Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title: AIP Advances
Publisher: American Institute of Physics
ISSN: 2158-3226
Official Date: 26 April 2019
Dates:
DateEvent
26 April 2019Published
4 April 2019Accepted
Volume: 9
Number: 4
Article Number: 045323
DOI: 10.1063/1.5086428
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 20 September 2019
Date of first compliant Open Access: 20 September 2019
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIED[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
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