Wave front engineering from an array of thin aperture antennas

Opt Express. 2012 Jul 2;20(14):15882-90. doi: 10.1364/OE.20.015882.


We propose an ultra-thin metamaterial constructed by an ensemble of the same type of anisotropic aperture antennas with phase discontinuity for wave front manipulation across the metamaterial. A circularly polarized light is completely converted to the cross-polarized light which can either be bent or focused tightly near the diffraction limit. It depends on a precise control of the optical-axis profile of the antennas on a subwavelength scale, in which the rotation angle of the optical axis has a simple linear relationship to the phase discontinuity. Such an approach enables effective wave front engineering within a subwavelength scale.

Publication types

  • Research Support, Non-U.S. Gov't