Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating

S.S. Stafeev; A.G. Nalimov; M.V. Kotlyar; Liam O'Faolain; V.V. Kotlyar

doi:10.1016/j.proeng.2017.09.668

Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating

S.S. Stafeev, A.G. Nalimov, M.V. Kotlyar, Liam O'Faolain, V.V. Kotlyar

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Focusing of an optical vortex with sectorial azimuthal polarization is numerically investigated. An effect of sector numbers on the results of focusing is estimated. It is shown that the focal spot produced by a beam with six sectors does not differ from the ideally azimuthally polarized optical vortex; a difference in the focal spot diameter does not exceed 0.001 of the wavelength. For a four-sectoral beam, the difference does not exceed 0.028 of the wavelength. We have investigated a four-Sector transmission Polarization Converter for a wavelength of 633 nm, that enables the conversion of a linearly polarized incident beam into a mixture of linearly and azimuthally polarized beams. It was experimentally shown that light propagated through the four-Sector transmission Polarization Converter and focused by Fresnel zone plate with a focal length of 532 nm produces focal spot with diameters 0.46 and 0.57 of wavelength.

Original language	English
Title of host publication	3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russia
Editors	Victor Soifer, Nikolay Kazanskiy, Olga Korotkova, Sergei Sazhin
Publisher	Elsevier
Pages	83-89
DOIs	https://doi.org/10.1016/j.proeng.2017.09.668
Publication status	Published - 2017
Event	III International Conference and Youth School "Information Technologies and Nanotechnologies" (ITNT-2017) - Samara National Research University, Samara, Russian Federation Duration: 25 Apr 2017 → 27 Apr 2017 Conference number: 3 http://itnt-conf.org/index.php/glavnaya/arkhiv/itnt-2017

Publication series

Name	Procedia Engineering
Volume	201
ISSN (Print)	1877-7058
ISSN (Electronic)	1877-7058

Conference

Conference	III International Conference and Youth School "Information Technologies and Nanotechnologies" (ITNT-2017)
Abbreviated title	ITNT-2017
Country/Territory	Russian Federation
City	Samara
Period	25/04/17 → 27/04/17
Internet address	http://itnt-conf.org/index.php/glavnaya/arkhiv/itnt-2017

Keywords

Tight focusing
Optical vortex
Azimuthally polarized light
Fresnel zone plate
Subwavelength grating
Polarization conversion

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Stafeev-2017-Tight-focusing-ITNT-2017-83-CC
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Stafeev, S. S., Nalimov, A. G., Kotlyar, M. V., O'Faolain, L., & Kotlyar, V. V. (2017). Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating. In V. Soifer, N. Kazanskiy, O. Korotkova, & S. Sazhin (Eds.), 3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russia (pp. 83-89). (Procedia Engineering; Vol. 201). Elsevier. https://doi.org/10.1016/j.proeng.2017.09.668

Stafeev, S.S. ; Nalimov, A.G. ; Kotlyar, M.V. et al. / Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating. 3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russia. editor / Victor Soifer ; Nikolay Kazanskiy ; Olga Korotkova ; Sergei Sazhin. Elsevier, 2017. pp. 83-89 (Procedia Engineering).

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title = "Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating",

abstract = "Focusing of an optical vortex with sectorial azimuthal polarization is numerically investigated. An effect of sector numbers on the results of focusing is estimated. It is shown that the focal spot produced by a beam with six sectors does not differ from the ideally azimuthally polarized optical vortex; a difference in the focal spot diameter does not exceed 0.001 of the wavelength. For a four-sectoral beam, the difference does not exceed 0.028 of the wavelength. We have investigated a four-Sector transmission Polarization Converter for a wavelength of 633 nm, that enables the conversion of a linearly polarized incident beam into a mixture of linearly and azimuthally polarized beams. It was experimentally shown that light propagated through the four-Sector transmission Polarization Converter and focused by Fresnel zone plate with a focal length of 532 nm produces focal spot with diameters 0.46 and 0.57 of wavelength.",

keywords = "Tight focusing, Optical vortex, Azimuthally polarized light, Fresnel zone plate, Subwavelength grating, Polarization conversion",

author = "S.S. Stafeev and A.G. Nalimov and M.V. Kotlyar and Liam O'Faolain and V.V. Kotlyar",

year = "2017",

doi = "10.1016/j.proeng.2017.09.668",

language = "English",

series = "Procedia Engineering",

publisher = "Elsevier",

pages = "83--89",

editor = "Victor Soifer and Nikolay Kazanskiy and Olga Korotkova and Sergei Sazhin",

booktitle = "3rd International Conference {"}Information Technology and Nanotechnology{"}, ITNT-2017, 25-27 April 2017, Samara, Russia",

address = "Netherlands",

note = "III International Conference and Youth School {"}Information Technologies and Nanotechnologies{"} (ITNT-2017), ITNT-2017 ; Conference date: 25-04-2017 Through 27-04-2017",

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}

Stafeev, SS, Nalimov, AG, Kotlyar, MV, O'Faolain, L & Kotlyar, VV 2017, Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating. in V Soifer, N Kazanskiy, O Korotkova & S Sazhin (eds), 3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russia. Procedia Engineering, vol. 201, Elsevier, pp. 83-89, III International Conference and Youth School "Information Technologies and Nanotechnologies" (ITNT-2017), Samara, Russian Federation, 25/04/17. https://doi.org/10.1016/j.proeng.2017.09.668

Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating. / Stafeev, S.S.; Nalimov, A.G.; Kotlyar, M.V. et al.
3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russia. ed. / Victor Soifer; Nikolay Kazanskiy; Olga Korotkova; Sergei Sazhin. Elsevier, 2017. p. 83-89 (Procedia Engineering; Vol. 201).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating

AU - Stafeev, S.S.

AU - Nalimov, A.G.

AU - Kotlyar, M.V.

AU - O'Faolain, Liam

AU - Kotlyar, V.V.

N1 - Conference code: 3

PY - 2017

Y1 - 2017

N2 - Focusing of an optical vortex with sectorial azimuthal polarization is numerically investigated. An effect of sector numbers on the results of focusing is estimated. It is shown that the focal spot produced by a beam with six sectors does not differ from the ideally azimuthally polarized optical vortex; a difference in the focal spot diameter does not exceed 0.001 of the wavelength. For a four-sectoral beam, the difference does not exceed 0.028 of the wavelength. We have investigated a four-Sector transmission Polarization Converter for a wavelength of 633 nm, that enables the conversion of a linearly polarized incident beam into a mixture of linearly and azimuthally polarized beams. It was experimentally shown that light propagated through the four-Sector transmission Polarization Converter and focused by Fresnel zone plate with a focal length of 532 nm produces focal spot with diameters 0.46 and 0.57 of wavelength.

AB - Focusing of an optical vortex with sectorial azimuthal polarization is numerically investigated. An effect of sector numbers on the results of focusing is estimated. It is shown that the focal spot produced by a beam with six sectors does not differ from the ideally azimuthally polarized optical vortex; a difference in the focal spot diameter does not exceed 0.001 of the wavelength. For a four-sectoral beam, the difference does not exceed 0.028 of the wavelength. We have investigated a four-Sector transmission Polarization Converter for a wavelength of 633 nm, that enables the conversion of a linearly polarized incident beam into a mixture of linearly and azimuthally polarized beams. It was experimentally shown that light propagated through the four-Sector transmission Polarization Converter and focused by Fresnel zone plate with a focal length of 532 nm produces focal spot with diameters 0.46 and 0.57 of wavelength.

KW - Tight focusing

KW - Optical vortex

KW - Azimuthally polarized light

KW - Fresnel zone plate

KW - Subwavelength grating

KW - Polarization conversion

U2 - 10.1016/j.proeng.2017.09.668

DO - 10.1016/j.proeng.2017.09.668

M3 - Conference contribution

T3 - Procedia Engineering

SP - 83

EP - 89

BT - 3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russia

A2 - Soifer, Victor

A2 - Kazanskiy, Nikolay

A2 - Korotkova, Olga

A2 - Sazhin, Sergei

PB - Elsevier

T2 - III International Conference and Youth School "Information Technologies and Nanotechnologies" (ITNT-2017)

Y2 - 25 April 2017 through 27 April 2017

ER -

Stafeev SS, Nalimov AG, Kotlyar MV, O'Faolain L, Kotlyar VV. Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating. In Soifer V, Kazanskiy N, Korotkova O, Sazhin S, editors, 3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russia. Elsevier. 2017. p. 83-89. (Procedia Engineering). Epub 2017 Sept 27. doi: 10.1016/j.proeng.2017.09.668

Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating

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