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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
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 | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Physics |
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Journal or Publication Title: | AIP Advances | ||||||
Publisher: | American Institute of Physics | ||||||
ISSN: | 2158-3226 | ||||||
Official Date: | 26 April 2019 | ||||||
Dates: |
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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 | ||||||
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