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Proceedings Paper

An efficient terahertz detector based on an optical hybrid cavity
Author(s): Thomas Siday; Robert J. Thompson; Samuel Glass; Ting-Shan Luk; John L. Reno; Igal Brener; Oleg Mitrofanov
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Paper Abstract

We demonstrate an efficient terahertz (THz) detector based on an optical hybrid cavity, which consists of an optically thin photoconductive layer between a distributed Bragg reflector (DBR) and an array of electrically isolated nanoantennas. Using a combination of numerical simulations and optical experiments, we find a hybrid cavity design which absorbs <75% of incident light with a 50 nm photoconductive layer. By integrating this optical hybrid cavity design into a THz detector, we see enhanced detection sensitivity at the operation wavelength (~815 nm) over designs which do not include the nanoantenna array.

Paper Details

Date Published: 23 February 2018
PDF: 7 pages
Proc. SPIE 10531, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI, 1053109 (23 February 2018); doi: 10.1117/12.2290971
Show Author Affiliations
Thomas Siday, Univ. College London (United Kingdom)
Robert J. Thompson, Univ. College London (United Kingdom)
Samuel Glass, Univ. College London (United Kingdom)
Ting-Shan Luk, Sandia National Labs. (United States)
John L. Reno, Sandia National Labs. (United States)
Igal Brener, Sandia National Labs. (United States)
Oleg Mitrofanov, Univ. College London (United Kingdom)
Sandia National Labs. (United States)


Published in SPIE Proceedings Vol. 10531:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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