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Formation of linearly polarized light with axial symmetry by use of space-variant subwavelength gratings

2003; Optica Publishing Group; Volume: 28; Issue: 7 Linguagem: Inglês

10.1364/ol.28.000510

1539-4794

Avi Niv, Gabriel Biener, Vladimir Kleiner, Erez Hasman,

Photonic and Optical Devices

We present a novel method for forming linearly polarized axially symmetric beams with various polarization orders that is based on computer-generated space-variant subwavelength gratings. We introduce and experimentally demonstrate that our space-variant polarization state manipulations are accompanied by a phase modification of a helical structure that results from the Pancharatnam–Berry phase. We have verified the polarization properties of our gratings for laser radiation at 10.6‐µm wavelength.