Plasmonic enhanced infrared detector element
AssigneeStc.Unm
InventorsWenjun Fan, Shuang Zhang, Kevin J. Malloy, Steven R. J. Brueck
Life of this patent
Estimating the term…
Abstract
Electromagnetic radiation detector elements and methods for detecting electromagnetic radiation, in particular, infrared radiation, are provided. The electromagnetic radiation detector element can include an electromagnetic radiation detector and a plasmonic antenna disposed over the electromagnetic radiation detector. The plasmonic antenna can include a metal film, a sub-wavelength aperture in the metal film, and a plurality of circular corrugations centered around the sub-wavelength aperture.
Claims24
An infrared detector element comprising:
- an infrared detector;
- and
- a plasmonic antenna disposed within a near field of the infrared detector, wherein the plasmonic antenna comprises,
- a metal film,
- a sub-wavelength aperture in the metal film, and
- a plurality of circular corrugations centered around the sub-wavelength aperture.
A method of detecting electromagnetic radiation comprising:
- providing a plasmonic antenna within a near field of a detector;
- propagating surface plasma waves along a metal film portion of the plasmonic antenna;
- coupling an energy from incident electromagnetic radiation to the surface plasma waves using a plurality of corrugations on the metal film;
- and
- transmitting the energy through a sub-wavelength aperture in the metal film to the detector.
An electromagnetic radiation detector element comprising:
- an electromagnetic radiation detector;
- and
- a plasmonic antenna disposed within a near field of the electromagnetic radiation detector, wherein the plasmonic antenna comprises,
- a metal film,
- a sub-wavelength aperture in the metal film, and
- a plurality of circular corrugations centered around the sub-wavelength aperture.
Dependencies are inferred from the claim text.