Comparison of the shape of focal spots in terms of intensity and energy flux for a high-aperture zone plate and a spiral zone plate

Comparison of the shape of focal spots in terms of intensity and energy flux for a high-aperture zone plate and a spiral zone plate

Using a finite-difference time-domain method, it has been shown that focal spots generated when tightly focusing a linearly polarized Gaussian beam by a Fresnel zone plate (FZP) and when focusing a Gaussian beam with an embedded optical vortex by a spiral zone plate (SZP) have different patterns of...

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Bibliographic Details
Main Authors: A.A. Savelyeva, E.S. Kozlova
Format: Article
Language:English
Published: Samara National Research University 2022-08-01
Series:Компьютерная оптика
Subjects:
two-layered dielectric microcylinder
photonic nanojet
tight focusing
fdtd-method
Online Access:https://computeroptics.ru/eng/KO/Annot/KO46-4/460403e.html

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