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Narrowband terahertz emitters using metamaterial films

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Author
Alves, Fabio
Kearney, Brian
Grbovic, Dragoslav
Karunasiri, Gamani
Date
2012-09
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Abstract
In this article we report on metamaterial-based narrowband thermal terahertz (THz) emitters with a bandwidth of about 1 THz. Single band emitters designed to radiate in the 4 to 8 THz range were found to emit as high as 36 W/m2 when operated at 400°. Emission into two well separated THz bands was also demonstrated by using metamaterial structures featuring more complex unit cells. Imaging of heated emitters using a microbolometer camera fitted with THz optics clearly showed the expected higher emissivity from the metamaterial structure compared to low-emissivity of the surrounding aluminum.
Description
Optics Express, Volume 20, No. 19, pp. 21025-21032 (10 September 2012)
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.
URI
http://hdl.handle.net/10945/44128
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