Palaferri, D, Todorov, Y, Chen, YN et al. (6 more authors) (2015) Patch antenna terahertz photodetectors. Applied Physics Letters, 106. 161102. ISSN 0003-6951
Abstract
We report on the implementation of 5 THz quantum well photodetector exploiting a patch antenna cavity array. The benefit of our plasmonic architecture on the detector performance is assessed by comparing it with detectors made using the same quantum well absorbing region, but processed into a standard 45° polished facet mesa. Our results demonstrate a clear improvement in responsivity, polarization insensitivity, and background limited performance. Peak detectivities in excess of 5 × 1012 cmHz1/2/W have been obtained, a value comparable with that of the best cryogenic cooled bolometers.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 Author(s). Licensed under a Creative Commons Attribution 3.0 Unported License. |
Keywords: | Quantum wells; Antennas; Photoelectric conversion; Dark currents; Gold |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 Apr 2015 10:53 |
Last Modified: | 23 Apr 2015 10:57 |
Published Version: | http://dx.doi.org/10.1063/1.4918983 |
Status: | Published |
Publisher: | American Institute of Physics |
Refereed: | Yes |
Identification Number: | 10.1063/1.4918983 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:85293 |