Narrowband terahertz emitters using metamaterial films

Download
Author
Alves, Fabio
Kearney, Brian
Grbovic, Dragoslav
Karunasiri, Gamani
Date
2012-09Metadata
Show full item recordAbstract
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.Collections
Related items
Showing items related by title, author, creator and subject.
-
Application of equivalent medium parameters in finite element models of microwave metamaterials
Hewitt, C.; Alves, F.; Luscombe, J.; Grbovic, D. (2018-03);Simulated or experimentally measured reflection and transmission are used to obtain effective permittivity (e), permeability (l), and conductivity (r) for a planar microwave metamaterial. These parameters are then used in ... -
Use of Equivalent Metamaterial Parameters in Finite Element Models of Macro-scale Metamaterial
Grbovic, Dragoslav; Alves, Fabio; Mattish, Richard (American Physical Society, 2018-03-06);Experimentally measured reflectance and transmittance are used to obtain effective permittivity, permeability and conductivity for a planar microwave metamaterial. These parameters are then used in a finite element models ... -
MEMS terahertz focal plane array with optical readout
Gonzalez, Hugo A., Jr. (Monterey, California: Naval Postgraduate School, 2016-06);The terahertz (THz) spectral range remains a relatively untapped portion of the electromagnetic spectrum. THz radiation's unique ability to penetrate non-metallic materials presents an exciting opportunity for many imaging ...