Massachusetts Institute of Technology

US Government As Represented by the Secretary of the Army

Boston University

Kebin Fan

Richard Douglas Averitt

Keith Adam Nelson

Harold Young Hwang

Mengkun Liu

Aaron Sternbach

Michael Wraback

Xin Zhang

Andrew Strikwerda

Grace D Metcalfe

An apparatus for detecting electromagnetic radiation within a target frequency range is provided. The apparatus includes a substrate and one or more resonator structures disposed on the substrate. The substrate can be a dielectric or semiconductor material. Each of the one or more resonator structures has at least one dimension that is less than the wavelength of target electromagnetic radiation within the target frequency range, and each of the resonator structures includes at least two conductive structures separated by a spacing. Charge carriers are induced in the substrate near the spacing when the resonator structures are exposed to the target electromagnetic radiation. A measure of the change in conductivity of the substrate due to the induced charge carriers provides an indication of the presence of the target electromagnetic radiation.

Detection of electromagnetic radiation using nonlinear materials

A reflection-mode waveplate for operation in the terahertz region by shifting the phase between two perpendicular polarization components of the light wave, comprising a ground plane; an array of polygonal unit cells; the polygonal unit cells comprising a polymer positioned between the ground plane and the exterior of the array of polygonal patches.

Electromagnetic composite-based reflecting terahertz waveplate

Growing community of inventors

Watertown, MA, United States of America

Kebin Fan