The comparison of the optical vortices focusing by silicon diffraction axicons and ring gratings with variable relief heights using high-performance computer systems

Dmitry Savelyev

doi:10.1117/12.2658778

8 December 2022 The comparison of the optical vortices focusing by silicon diffraction axicons and ring gratings with variable relief heights using high-performance computer systems

Dmitry Savelyev

Author Affiliations +

Proceedings Volume 12479, Optical Manipulation and Structured Materials Conference (OMC 2022); 1247906 (2022) https://doi.org/10.1117/12.2658778
Event: Optics and Photonics International Congress, 2022, Yokohama, Japan

Abstract

A study was made of the spatial distribution of the intensity of the Laguerre-superGaussian (1,0) modes with circular, radial and azimuthal polarization depending on the change in the height of silicon subwavelength optical elements, the height of which varied from 0.2 to 3 wavelengths. Simulation by the finite difference method in the time domain showed that a change in the height of the considered optical elements significantly affects the diffraction pattern in the near zone. The smallest focal spot size was obtained for "-" circular polarization at an element height equal to two wavelengths.

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Dmitry Savelyev "The comparison of the optical vortices focusing by silicon diffraction axicons and ring gratings with variable relief heights using high-performance computer systems", Proc. SPIE 12479, Optical Manipulation and Structured Materials Conference (OMC 2022), 1247906 (8 December 2022); https://doi.org/10.1117/12.2658778

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