Narrowband terahertz emitters using metamaterial films
MetadataShow full item record
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 400Â°. 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.
Optics Express, Volume 20, No. 19, pp. 21025-21032 (10 September 2012)
Showing items related by title, author, creator and subject.
Stinson, Eric A. (Monterey, California: Naval Postgraduate School, 2015-12);The aim of this work is to develop a metamaterial absorber that can be incorporated into a terahertz (THz) imaging system with a 4.7 THz quantum cascade laser (QCL) illumination source. Finite element (FE) simulations were ...
Grbovic, Dragoslav; Alves, Fabio; Kearney, Brian; Waxer, Benjamin; Perez, Rolando; Omictin, George (2013);We report on the characterization of metal-organic hybrid metamaterials for MEMS-based terahertz (THz) thermal sensors and on the characterization of refractive index of SU-8 in the THz band. This type of metamaterial, ...
Cotuk, Umit. (Monterey California. Naval Postgraduate School, 2005-09);The complex permittivity ( )Ì and permeability ( Ã¦) of a material determine the response of the material to electromagnetic radiation. Usually, the real parts of Ì and Ã¦ are positive for naturally occurring materials ...