Ultra-thin circular polarization analyzer based on the metal rectangular split-ring resonators

We propose an ultra-thin metasurface of the metal rectangular split-ring resonators (MRSRR) array which can modulate and analyze the wavefront of circularly polarized light efficiently. An incident circularly polarized light could be converted into the corresponding cross-polarized light which would be bent to +/- 23 degrees at a wavelength of 808nm for the normal incidence. And a linearly polarized light would be decomposed into two lights of left and right-handed circular polarizations in the directions of -/+ 23 degrees respectively. These phenomena have also been observed at 1200nm with different geometric parameters. And these results depend on controlling the optical-axis profile of the resonators in a subwavelength scale by precisely modulating two degrees of freedom in our nanostructures. (C)2014 Optical Society of America