Uncooled CMOS terahertz imager using a metamaterial absorber and pn diode

Escorcia Carranza, I. , Grant, J. , Gough, J. and Cumming, D. R.S. (2016) Uncooled CMOS terahertz imager using a metamaterial absorber and pn diode. Optics Letters, 41(14), pp. 3261-3264. (doi:10.1364/OL.41.003261) (PMID:27420510)

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Abstract

We demonstrate a low-cost uncooled terahertz (THz) imager fabricated in a standard 180 nm CMOS process. The imager is composed of a broadband THz metamaterial absorber coupled with a diode microbolometer sensor where the pn junction is used as a temperature sensitive device. The metamaterial absorber array is integrated in the top metallic layers of a six metal layer process allowing for complete monolithic integration of the metamaterial absorber and sensor. We demonstrate the capability of the detector for stand-off imaging applications by using it to form transmission and reflection images of a metallic object hidden in a manila envelope.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cumming, Professor David and Escorcia Carranza, Dr Ivonne and Gough, Mr John and Grant, Dr James
Authors: Escorcia Carranza, I., Grant, J., Gough, J., and Cumming, D. R.S.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN:0146-9592
ISSN (Online):1539-4794
Published Online:15 July 2016
Copyright Holders:Copyright © 2016 Optical Society of America
First Published:First published in Optics Letters 41(14):3261-3264
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
Data DOI:10.5525/gla.researchdata.314

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
552421Monolithic Resonant TeraHertz DetectorsDavid CummingEngineering & Physical Sciences Research Council (EPSRC)EP/I017461/1ENG - ENGINEERING ELECTRONICS & NANO ENG
588332Triple wavelength superspectral camera focal-plane array (SUPERCAMERA)David CummingEngineering & Physical Sciences Research Council (EPSRC)EP/J018678/1ENG - ENGINEERING ELECTRONICS & NANO ENG