Potential of Bessel spiral zone plate in complex beam shaping and structuring

Published on 2019-11-08T16:17:58Z (GMT) by
We aim here to show that azimuthal structuring of the optical beam may be realized by apodizing spiral zone plate using an azimuthal modulated Bessel function. We demonstrate that the azimuthal modulation of a Bessel beam may cause its transmittance to take negative values in azimuth. Accordingly, when a diffractive element (herein spiral zone plate) is apodized by such a modulated Bessel function its transmittance undergoes an azimuthally phase change which imposes that phase change on a beam passing through it. This means that the technique enables us to produce a variety of azimuthal beam shapes like a spiral, ring-lattice, light-arm, and multi-spot beams. In this research, we illustrate how these structures and shapes are produced and tailored. To verify the consequences of the simulation, the corresponding experiments were planned.

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Sabatyan, Arash; Taheri, Seyyed Mojtaba (2019): Potential of Bessel spiral zone plate in complex beam shaping and structuring. The Optical Society. Collection. https://doi.org/10.6084/m9.figshare.c.4680899.v1