DESIGN OF DIFFRACTIVE ELEMENTS AT MILLIMETER WAVELENGTHS USING SUBWAVELENGTH CYLINDRICAL MICROSTRUCTURES

摘要

We describe a design methodology for synthesizing diffractive elements based on two-dimensional subwavelength cylindrical microstructures. We combine a numerical and experimental approach to demonstrate that by varying the diameter, pitch, and depth of subwavelength cylindrical occlusions in a homogenous substrate it is possible to produce multiphase diffractive elements.