Propagation-invariant vectorial Bessel beams obtained by use of quantized Pancharatnam–Berry phase optical elements

Abstract

Propagation-invariant vectorial Bessel beams with linearly polarized axial symmetry based on quantized Pancharatnam–Berry phase optical elements are described. The geometric phase is formed through the use of discrete computer-generated space-variant subwavelength dielectric gratings. We have verified the polarization properties of our elements for laser radiation at $10.6‐\mathit{\mu }\mathrm{m}$ wavelength and also demonstrated propagation-invariant, controlled rotation of a propeller-shaped intensity pattern through the simple rotation of a polarizer.

© 2004 Optical Society of America

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