Polarization conversion when focusing cylindrically polarized vortex beams

Abstract Currently, cylindrical beams with radial or azimuthal polarization are being used successfully for the optical manipulation of micro- and nano-particles as well as in microscopy, lithography, nonlinear optics, materials processing, and telecommunication applications. The creation of these l...

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Autores principales:	Alexey P. Porfirev, Andrey V. Ustinov, Svetlana N. Khonina
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2016
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ea0d02135eb54c45bae2c427c26d6c04
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spelling	oai:doaj.org-article:ea0d02135eb54c45bae2c427c26d6c042021-12-02T15:06:06ZPolarization conversion when focusing cylindrically polarized vortex beams10.1038/s41598-016-0015-22045-2322https://doaj.org/article/ea0d02135eb54c45bae2c427c26d6c042016-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-016-0015-2https://doaj.org/toc/2045-2322Abstract Currently, cylindrical beams with radial or azimuthal polarization are being used successfully for the optical manipulation of micro- and nano-particles as well as in microscopy, lithography, nonlinear optics, materials processing, and telecommunication applications. The creation of these laser beams is carried out using segmented polarizing plates, subwavelength gratings, interference, or light modulators. Here, we demonstrate the conversion of cylindrically polarized laser beams from a radial to an azimuthal polarization, or vice versa, by introducing a higher-order vortex phase singularity. To simultaneously generate several vortex phase singularities of different orders, we utilized a multi-order diffractive optical element. Both the theoretical and the experimental results regarding the radiation transmitted through the diffractive optical element show that increasing the order of the phase singularity leads to more efficient conversation of the polarization from radial to azimuthal. This demonstrates a close connection between the polarization and phase states of electromagnetic beams, which has important implications in many optical experiments.Alexey P. PorfirevAndrey V. UstinovSvetlana N. KhoninaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 6, Iss 1, Pp 1-9 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexey P. Porfirev Andrey V. Ustinov Svetlana N. Khonina Polarization conversion when focusing cylindrically polarized vortex beams
description	Abstract Currently, cylindrical beams with radial or azimuthal polarization are being used successfully for the optical manipulation of micro- and nano-particles as well as in microscopy, lithography, nonlinear optics, materials processing, and telecommunication applications. The creation of these laser beams is carried out using segmented polarizing plates, subwavelength gratings, interference, or light modulators. Here, we demonstrate the conversion of cylindrically polarized laser beams from a radial to an azimuthal polarization, or vice versa, by introducing a higher-order vortex phase singularity. To simultaneously generate several vortex phase singularities of different orders, we utilized a multi-order diffractive optical element. Both the theoretical and the experimental results regarding the radiation transmitted through the diffractive optical element show that increasing the order of the phase singularity leads to more efficient conversation of the polarization from radial to azimuthal. This demonstrates a close connection between the polarization and phase states of electromagnetic beams, which has important implications in many optical experiments.
format	article
author	Alexey P. Porfirev Andrey V. Ustinov Svetlana N. Khonina
author_facet	Alexey P. Porfirev Andrey V. Ustinov Svetlana N. Khonina
author_sort	Alexey P. Porfirev
title	Polarization conversion when focusing cylindrically polarized vortex beams
title_short	Polarization conversion when focusing cylindrically polarized vortex beams
title_full	Polarization conversion when focusing cylindrically polarized vortex beams
title_fullStr	Polarization conversion when focusing cylindrically polarized vortex beams
title_full_unstemmed	Polarization conversion when focusing cylindrically polarized vortex beams
title_sort	polarization conversion when focusing cylindrically polarized vortex beams
publisher	Nature Portfolio
publishDate	2016
url	https://doaj.org/article/ea0d02135eb54c45bae2c427c26d6c04
work_keys_str_mv	AT alexeypporfirev polarizationconversionwhenfocusingcylindricallypolarizedvortexbeams AT andreyvustinov polarizationconversionwhenfocusingcylindricallypolarizedvortexbeams AT svetlanankhonina polarizationconversionwhenfocusingcylindricallypolarizedvortexbeams
_version_	1718388616491696128

Polarization conversion when focusing cylindrically polarized vortex beams

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