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Space-variant Pancharatnam–Berry phase optical elements with computer-generated subwavelength gratings

2002; Optica Publishing Group; Volume: 27; Issue: 13 Linguagem: Inglês

10.1364/ol.27.001141

1539-4794

Zéev Bomzon, Gabriel Biener, Vladimir Kleiner, Erez Hasman,

Orbital Angular Momentum in Optics

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 10.6 µm.