MEMS terahertz focal plane array with optical readout
Gonzalez, Hugo A., Jr.
Alves, Fabio D.P.
Kim, Jae Jun
MetadataShow full item record
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 applications. The purpose of this research is to investigate a unique imaging method using a THz radiation source and metamaterial absorber. By using a metamaterial absorber, the THz detection frequency of interest can be tuned by controlling geometrical parameters with nearly 100% absorption. THz sensing can be achieved by integrating a metamaterial absorber with bi-material legs to form a sensor. Moveable mirror-like surfaces on the backside of the metamaterial under THz absorption can cause a deflection of visible light and from it, the original image can be reconstructed using an optical readout system. In this thesis, the construction of the optical readout system for characterization of sensor pixels as well as THz imaging is described.
Approved for public release; distribution is unlimited
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 ...
Hewitt, Chester H., III (Monterey, California: Naval Postgraduate School, 2017-06);Since the dawn of warfare, arms and armor have been locked in a never-ending struggle fordominance. A new development in that struggle is the advent of high-power microwave (HPM) directed-energy weapons (DEWs), which can ...
Alves, Fabio; Kearney, Brian; Grbovic, Dragoslav; Karunasiri, Gamani (2012-09);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 ...