论文信息 - Formation of helical beams by use of Pancharatnam-Berry phase optical elements.

Formation of helical beams by use of Pancharatnam-Berry phase optical elements.

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 .

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