Efficient broadband energy detection from the visible to near-infrared using a plasmon FET.

Authors:
Seongman Cho
Seongman Cho
University of Miami
Coral Gables | United States
Monica S Allen
Monica S Allen
Air Force Research Laboratory
Wright-Patterson Air Force Base | United States
Kevin D Leedy
Kevin D Leedy
Air Force Research Laboratory
Wright-Patterson Air Force Base | United States
Brett R Wenner
Brett R Wenner
Duke University Medical Center
United States
Sung Jin Kim
Sung Jin Kim
Yonsei University Wonju College of Medicine

Nanotechnology 2018 Jul 11;29(28):285201. Epub 2018 Apr 11.

Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL 33146, United States of America.

Plasmon based field effect transistors (FETs) can be used to convert energy induced by incident optical radiation to electrical energy. Plasmonic FETs can efficiently detect incident light and amplify it by coupling to resonant plasmonic modes thus improving selectivity and signal to noise ratio. The spectral responses can be tailored both through optimization of nanostructure geometry as well as constitutive materials. In this paper, we studied various plasmonic nanostructures using gold for a wideband spectral response from visible to near-infrared. We show, using empirical data and simulation results, that detection loss exponentially increases as the volume of metal nanostructure increases and also a limited spectral response is possible using gold nanostructures in a plasmon to electric conversion device. Finally, we demonstrate a plasmon FET that offers a broadband spectral response from visible to telecommunication wavelengths.

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Source
http://dx.doi.org/10.1088/1361-6528/aabd6bDOI Listing
July 2018
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