Modifying Bessel beam profiles with a spherulite-based radial polarizer
We present a radial polarizer prepared by growing a thickness-constrained spherulite from an oleoresin polymer. As an insert between crossed linear polarizers, the fabricated device is used to alter the intensity profile of an incident zero-order Bessel beam. Radially polarized output beams have an intensity profile with a pronounced singularity at the center. Beams may be rotated by a simple reorientation of the crossed polarizers. Experimental results with our radial polarizer correspond to a transformation of the Bessel beam order from l = 0 to l = 2.
Ama, A. T., & Guerrero, R. A. (2020). Modifying Bessel beam profiles with a spherulite-based radial polarizer. Applied Optics, 59(3), 878-883.