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Tight focusing of a nonhomogeneously polarized optical vortex
Author(s): S. S. Stafeev; A. G. Nalimov; L. O'Faolain; M. V. Kotlyar; V. V. Kotlyar
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Paper Abstract

In this work, we fabricated and studied the performance of a 100×100-μm four-sector binary subwavelength grating polarizer in a golden film. It was experimentally demonstrated that a linearly polarized 532-nm Gaussian beam reflected at the polarizer was converted to an azimuthally polarized beam. Putting a spiral phase plate (SPP) with the topological charge n = 1 into the azimuthally polarized beam from the micropolarizer was experimentally shown to enable the conversion of the annular intensity pattern into a central intensity peak.

Paper Details

Date Published: 26 April 2018
PDF: 7 pages
Proc. SPIE 10717, Saratov Fall Meeting 2017: Laser Physics and Photonics XVIII; and Computational Biophysics and Analysis of Biomedical Data IV, 107170N (26 April 2018); doi: 10.1117/12.2315598
Show Author Affiliations
S. S. Stafeev, Image Processing Systems Institute (Russian Federation)
Samara National Research Univ. (Russian Federation)
A. G. Nalimov, Image Processing Systems Institute (Russian Federation)
Samara National Research Univ. (Russian Federation)
L. O'Faolain, Cork Institute of Technology (Ireland)
M. V. Kotlyar, Samara National Research Univ. (Russian Federation)
Samara National Research Univ. (Russian Federation)
V. V. Kotlyar, Image Processing Systems Institute (Russian Federation)
Samara National Research Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 10717:
Saratov Fall Meeting 2017: Laser Physics and Photonics XVIII; and Computational Biophysics and Analysis of Biomedical Data IV
Vladimir L. Derbov; Dmitry Engelevich Postnov, Editor(s)

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