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

作者：Gabriel Biener, Avi Niv, Vladimir Kleiner, Erez Hasman · 发表于：Optics Letters · 年份：2002 · DOI：10.1364/ol.27.001875 · 被引用次数：360 · 研究领域：Orbital Angular Momentum in Optics、Metamaterials and Metasurfaces Applications、Plasmonic and Surface Plasmon Research

Spiral phase elements with topological charges based on space-variant Pancharatnam-Berry phase optical elements are presented. Such elements can be achieved by use of continuous computer-generated space-variant subwavelength dielectric gratings. We present a theoretical analysis and experimentally demonstrate spiral geometrical phases for infrared radiation at a wavelength of 10.6microm .