Abstract

We propose the use of a geometric phase, obtained by spatial polarization state manipulations, for the formation of polychromatic vectorial vortices. Experimental demonstration is obtained by using Pancharatnam–Berry phase optical elements formed by a space-variant subwavelength grating etched on a $\mathrm{GaAs}$ wafer. We further demonstrate formation of scalar and unpolarized polychromatic vortices.

© 2007 Optical Society of America

Vectorial vortex mode transformation for a hollow waveguide using Pancharatnam-Berry phase optical elements

Yaniv Yirmiyahu, Avi Niv, Gabriel Biener, Vladimir Kleiner, and Erez Hasman
Opt. Lett. 31(22) 3252-3254 (2006)

Manipulation of the Pancharatnam phase in vectorial vortices

Avi Niv, Gabriel Biener, Vladimir Kleiner, and Erez Hasman
Opt. Express 14(10) 4208-4220 (2006)

Formation of helical beams by use of Pancharatnam–Berry phase optical elements

Gabriel Biener, Avi Niv, Vladimir Kleiner, and Erez Hasman
Opt. Lett. 27(21) 1875-1877 (2002)

Propagation-invariant vectorial Bessel beams obtained by use of quantized Pancharatnam–Berry phase optical elements

Avi Niv, Gabriel Biener, Vladimir Kleiner, and Erez Hasman
Opt. Lett. 29(3) 238-240 (2004)

Manipulation of polarization-dependent multivortices with quasi-periodic subwavelength structures

Gabriel Biener, Yuri Gorodetski, Avi Niv, Vladimir Kleiner, and Erez Hasman
Opt. Lett. 31(11) 1594-1596 (2006)