The Library
Active THz beam shaping using a one-dimensional array of photoconductive emitters
Tools
Chopra, Nishtha, Deveikis, Justas and Lloyd-Hughes, James (2023) Active THz beam shaping using a one-dimensional array of photoconductive emitters. Applied Physics Letters, 122 (6). 061102. doi:10.1063/5.0132207 ISSN 0003-6951.
|
PDF
WRAP-Active-THz-beam-shaping-using-one-dimensional-array-photoconductive-emitter-2023.pdf - Published Version - Requires a PDF viewer. Download (1111Kb) | Preview |
Official URL: https://doi.org/10.1063/5.0132207
Abstract
The spatial profile of a beam of pulsed terahertz (THz) radiation is controlled electrically using a multi-pixel photoconductive emitter, which consists of an array of interdigitated electrodes fabricated on semi-insulating GaAs. Activating individual pixels allows the transverse position of the THz beam's focus to be varied off-axis, as verified by spatial beam profiles. Enabling multiple pixels simultaneously permits non-Gaussian beam shapes to be created. The diffraction-limited performance of the system is established by comparison with the Abbé and Sparrow criteria, and a condition for effective beam steering using this design is derived. The spatial resolution of the approach is linked to the frequency of the THz radiation and the f-number of the collection optic.
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Library of Congress Subject Headings (LCSH): | Terahertz spectroscopy, Terahertz technology, Photoconductivity | ||||||||
Journal or Publication Title: | Applied Physics Letters | ||||||||
Publisher: | American Institute of Physics | ||||||||
ISSN: | 0003-6951 | ||||||||
Official Date: | 2023 | ||||||||
Dates: |
|
||||||||
Volume: | 122 | ||||||||
Number: | 6 | ||||||||
Article Number: | 061102 | ||||||||
DOI: | 10.1063/5.0132207 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Re-use Statement: | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Chopra, Nishtha, Deveikis, Justas and Lloyd-Hughes, James (2023) Active THz beam shaping using a one-dimensional array of photoconductive emitters. Applied Physics Letters, 122 (6). 061102. and may be found at https://doi.org/10.1063/5.0132207 | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 14 March 2023 | ||||||||
Date of first compliant Open Access: | 6 February 2024 | ||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year