Abstract

This study introduces and demonstrates the diffractive feature of a bi-segment spiral zone plate, so that each segment has its own width, topological charge, and radial phase shift. We show that the focusing behavior of this element depends strongly on these parameters. We demonstrate how these features can handle the focused intensity and structure of an incident plane beam. A variety of beam shapes and structures are generated at the focal plane. Theoretical and simulation results are verified by the corresponding experiments.

© 2019 Optical Society of America

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

Seyed Mojtaba Taheri Balanoji and Arash Sabatyan
J. Opt. Soc. Am. B 36(12) 3333-3340 (2019)

Realizing a Gauss hypergeometric beam described as ₂F₁ (a, b, c; x²) by Bessel spiral zone plate

Seyyed Mojtaba Taheri Balanoi and Arash Sabatyan
J. Opt. Soc. Am. B 35(11) 2667-2673 (2018)

Spirally phase-shifted zone plate for generating and manipulating multiple spiral beams

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Azimuthal phase-shifted zone plates to produce petal-like beams and ring lattice structures

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Azimuthally phase-shifted Fibonacci zone plate

Jila Rafighdoost, Yuan Zhou, Xing Li, Shaohui Yan, Meiling Zhou, and Baoli Yao
J. Opt. Soc. Am. B 37(12) 3557-3563 (2020)