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Precise and accurate control of the ellipticity of THz radiation using a photoconductive pixel array
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Mosley, C. D. W., Deveikis, Justas and Lloyd-Hughes, James (2021) Precise and accurate control of the ellipticity of THz radiation using a photoconductive pixel array. Applied Physics Letters, 119 (12). 121105. doi:10.1063/5.0064146 ISSN 1077-3118.
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Official URL: https://doi.org/10.1063/5.0064146
Abstract
Full control of the ellipticity of broadband pulses of THz radiation, from linear to left- or right-handed circular polarization, was demonstrated via a four-pixel photoconductive emitter with an integrated achromatic waveplate. Excellent polarization purity and accuracy were achieved, with Stokes parameters exceeding 97% for linear and circular polarization, via a robust scheme that corrected electrically for polarization changes caused by imperfect optical elements. Furthermore, to assess the speed and precision of measurements of the THz polarization, we introduced a figure of merit, the standard error after one second of measurement, found to be 0.047° for the polarization angle.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| SWORD Depositor: | Library Publications Router | ||||||
| Journal or Publication Title: | Applied Physics Letters | ||||||
| Publisher: | AIP Publishing | ||||||
| ISSN: | 1077-3118 | ||||||
| Official Date: | 20 September 2021 | ||||||
| Dates: |
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| Volume: | 119 | ||||||
| Number: | 12 | ||||||
| Article Number: | 121105 | ||||||
| DOI: | 10.1063/5.0064146 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Reuse Statement (publisher, data, author rights): | ** From Crossref journal articles via Jisc Publications Router ** History: ppub 20-09-2021; issued 20-09-2021. | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Copyright Holders: | © 2021 Author(s). Published under an exclusive license by AIP Publishing. |
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