Subwavelength gratings for generating azimuthally polarized beams

Abstract

We have experimentally investigated two binary subwavelength grating-micropolarizers that transform linearly polarized light to the azimuthally polarized beam. The first micropolarizer operates in reflective mode (for wave-length 532 nm) and was manufactured in a gold film. The second micropolarizer operates in transmitting mode (for wavelength 633 nm) and was manufac-tured in silicon.