Space-variant Pancharatnam–Berry phase optical elements based on computer-generated subwavelength gratings are presented. By continuously controlling the local orientation and period of the grating we can achieve any desired phase element. We present a theoretical analysis and experimentally demonstrate a Pancharatnam–Berry phase-based diffraction grating for laser radiation at a wavelength of 10.6µm.
© 2002 Optical Society of America
(050.1970) Diffraction and gratings : Diffractive optics
(050.2770) Diffraction and gratings : Gratings
(260.5430) Physical optics : Polarization
(350.1370) Other areas of optics : Berry's phase
Ze'ev Bomzon, Gabriel Biener, Vladimir Kleiner, and Erez Hasman, "Space-variant Pancharatnam-Berry phase optical elements with computer-generated subwavelength gratings," Opt. Lett. 27, 1141-1143 (2002)