Space-variant polarization manipulation of thermal emission
AssigneeTechnion Research & Development Foundation Limited
InventorsErez Hasman, Nir Dahan, Avi Niv, Gabriel Biener, Vladimir Kleiner
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Abstract
A method for Space-variant polarization manipulation of enhanced nondirectional thermal emission in a narrow spectral peak is disclosed, comprising providing a subwavelength grating irradiating non-directional thermal emission on the grating and discretely controlling the local orientation of the grating.
Claims12
A method for space-variant manipulating of thermal emission from a surface of a material that supports surface waves, the method comprising:
- providing on the surface of the material a grating with a spatially varying grating parameter for optical encryption of information;
- and
- imaging the thermal emission.
A method for optical encryption of information, the method comprising providing a grating with a spatially varying grating parameter on a surface of a material that supports surface waves, wherein the spatially varying grating parameter is designed to so as to include optically encrypted information.
Dependencies are inferred from the claim text.