Sub-millimeter and terahertz frequency metamaterial flat lens

Abstract

A metamaterial flat lens having one or more dielectric layers and one or more metal layers. Each of the one or more metal layers is disposed on one of the one or more dielectric layers or between two of the one or more dielectric layers. Each of the one or more metal layers has a regularly spaced pattern of metal features. The metal features differ in size, and each metal feature in each of the one or more metal layers is aligned with corresponding metal features in the other one or more metal layers if present to define a pixel having a thickness of the lens. The lens comprises a multiplicity of pixels, with each pixel of the multiplicity of pixels having a side length in the plane of the lens based on the free-space wavelength of the light to be focused. The light to be focused has a frequency of at least 480 GHz.

Dependencies are inferred from the claim text.