An efficient terahertz detector based on an optical hybrid cavity

Thomas Siday; Robert J. Thompson; Samuel Glass; Ting-Shan Luk; John L. Reno; Igal Brener; Oleg Mitrofanov

doi:10.1117/12.2290971

23 February 2018 An efficient terahertz detector based on an optical hybrid cavity

Thomas Siday, Robert J. Thompson, Samuel Glass, Ting-Shan Luk, John L. Reno, Igal Brener, Oleg Mitrofanov

Proceedings Volume 10531, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI; 1053109 (2018) https://doi.org/10.1117/12.2290971
Event: SPIE OPTO, 2018, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

Thomas Siday, Robert J. Thompson, Samuel Glass, Ting-Shan Luk, John L. Reno, Igal Brener, and Oleg Mitrofanov "An efficient terahertz detector based on an optical hybrid cavity", Proc. SPIE 10531, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI, 1053109 (23 February 2018); https://doi.org/10.1117/12.2290971

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