CPC G02B 27/283 (2013.01) [G02B 5/3083 (2013.01); G02B 6/272 (2013.01)] | 22 Claims |
1. A waveplate comprising:
a substrate forming an optic;
the substrate including an integral portion forming a plurality of angled columnar features on an exposed surface thereof, the plurality of angled columnar features forming a metasurface that extends partially into a thickness of the substrate;
each of the angled columnar features having a tapering wall that forms a non-uniform cross-sectional area over a length thereof;
the plurality of angled columnar features further being aligned parallel with a directional plane formed non-parallel to a reference plane, the reference plane being normal to a surface of the substrate, and such that the tapering wall of each said angled columnar feature is non-symmetrical along a first longitudinal axis of the substrate, and symmetrical along a second axis extending orthogonal to the first longitudinal axis; and
the metasurface forming a birefringent metasurface.
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