Publication:
Highly absorbing nano-scale metal films for terahertz applications

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Authors
Alves, Fabio
Karamitros, Apostolos
Karunasiri, Gamani
Kearney, Brian
Grbovic, Dragoslav
Office of Naval Research (ONR)
Subjects
thin films
terahertz
sensors
metal films.
Advisors
Date of Issue
2012-06
Date
Publisher
SPIE
Language
Abstract
Our work aims to identify nano-scale metal films with enhanced absorption in the terahertz (THz) spectral range (1 to 10 THz) that can be incorporated in thermal imagers that operate in this spectral band. Absorption measurements of chromium and nickel films with different thicknesses (2.5 to 50 nm) revealed that absorption as high as 47% can be achieved by controlling the thickness of the film. The measured absorption agrees well with the predicted maximum absorption of 50% using thin metal films. The results indicate that nanometer scale metal films can provide high THz absorption for applications in thermal sensing.
Type
Article
Description
The article of record as published may be found at https://doi.org/10.1117/1.OE.51.6.063801
Series/Report No
Department
Physics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
7 p.
Citation
Alves, Fabio, et al. "Highly absorbing nano-scale metal films for terahertz applications." Optical Engineering 51.6 (2012): 063801.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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