DOAJ Open Access 2024

Features of focusing of optical vortices using subwavelength elements with varying height of odd and even relief zones

D.A. Savelyev

Abstrak

In this work, the propagation of optical vortices with circular, radial, and azimuthal polarization through subwavelength ring gratings with standard and GRIN substrates using a finite difference time domain method is numerically simulated. It is shown that it is possible to select the polarization of laser radiation and parameters of the element in such a way that a long optical needle (up to 8.04λ, radial polarization), a tight focal spot (up to 0.4λ in diameter, circular polarization), single optical traps, and combinations thereof are generated on the optical axis.

Topik & Kata Kunci

Information theory Optics. Light

Penulis (1)

D.A. Savelyev

Format Sitasi

APA MLA BibTeX

Savelyev, D. (2024). Features of focusing of optical vortices using subwavelength elements with varying height of odd and even relief zones. https://doi.org/10.18287/2412-6179-CO-1531

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Informasi Jurnal

Tahun Terbit: 2024
Sumber Database: DOAJ
DOI: 10.18287/2412-6179-CO-1531
Akses: Open Access ✓