Radial beam by amplitude modulation and phase-shifting per quadrant in a double-aperture common-path interferometer

R. Kantun-Montiel, G. P. Lemus-Alonso, Cruz Meneses Fabian

Resultado de la investigación: Contribución a una revistaArtículo

Resumen

In this work, we propose a very simple, and efficient interferometric setup for transforming a homogeneous linearly polarized beam into a radially polarized beam. The proposal is based in a double-aperture common-path interferometer adapted for phase-shifting of π radians per quadrant. It is carried out by placing two composed grating in each aperture, which are built by joining two gratings displaced by a half-period, on horizontal and vertical direction, respectively. The input optical beams are orthogonal and linearly polarized, and their amplitudes are modulated in quadrature. We show that the combination of amplitude-only filters and the π phase-shifting per quadrant can achieve the implementation of complex filters such as the sinusoidal ones. The combination of the spatial modulation of both amplitude and phase generates an optical field with radial polarization. Specialized optical elements of high cost and SLM devices are avoided. We show the theoretical model and experimental results.

Idioma originalInglés
Número de artículo055602
PublicaciónJournal of Optics (United Kingdom)
Volumen21
N.º5
DOI
EstadoPublicada - 12 abr 2019

Huella dactilar

Amplitude modulation
quadrants
Optical devices
Joining
Interferometers
interferometers
apertures
Modulation
Polarization
gratings
filters
Costs
quadratures
proposals
costs
modulation
polarization
Direction compound

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title = "Radial beam by amplitude modulation and phase-shifting per quadrant in a double-aperture common-path interferometer",
abstract = "In this work, we propose a very simple, and efficient interferometric setup for transforming a homogeneous linearly polarized beam into a radially polarized beam. The proposal is based in a double-aperture common-path interferometer adapted for phase-shifting of π radians per quadrant. It is carried out by placing two composed grating in each aperture, which are built by joining two gratings displaced by a half-period, on horizontal and vertical direction, respectively. The input optical beams are orthogonal and linearly polarized, and their amplitudes are modulated in quadrature. We show that the combination of amplitude-only filters and the π phase-shifting per quadrant can achieve the implementation of complex filters such as the sinusoidal ones. The combination of the spatial modulation of both amplitude and phase generates an optical field with radial polarization. Specialized optical elements of high cost and SLM devices are avoided. We show the theoretical model and experimental results.",
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Radial beam by amplitude modulation and phase-shifting per quadrant in a double-aperture common-path interferometer. / Kantun-Montiel, R.; Lemus-Alonso, G. P.; Meneses Fabian, Cruz.

En: Journal of Optics (United Kingdom), Vol. 21, N.º 5, 055602, 12.04.2019.

Resultado de la investigación: Contribución a una revistaArtículo

TY - JOUR

T1 - Radial beam by amplitude modulation and phase-shifting per quadrant in a double-aperture common-path interferometer

AU - Kantun-Montiel, R.

AU - Lemus-Alonso, G. P.

AU - Meneses Fabian, Cruz

PY - 2019/4/12

Y1 - 2019/4/12

N2 - In this work, we propose a very simple, and efficient interferometric setup for transforming a homogeneous linearly polarized beam into a radially polarized beam. The proposal is based in a double-aperture common-path interferometer adapted for phase-shifting of π radians per quadrant. It is carried out by placing two composed grating in each aperture, which are built by joining two gratings displaced by a half-period, on horizontal and vertical direction, respectively. The input optical beams are orthogonal and linearly polarized, and their amplitudes are modulated in quadrature. We show that the combination of amplitude-only filters and the π phase-shifting per quadrant can achieve the implementation of complex filters such as the sinusoidal ones. The combination of the spatial modulation of both amplitude and phase generates an optical field with radial polarization. Specialized optical elements of high cost and SLM devices are avoided. We show the theoretical model and experimental results.

AB - In this work, we propose a very simple, and efficient interferometric setup for transforming a homogeneous linearly polarized beam into a radially polarized beam. The proposal is based in a double-aperture common-path interferometer adapted for phase-shifting of π radians per quadrant. It is carried out by placing two composed grating in each aperture, which are built by joining two gratings displaced by a half-period, on horizontal and vertical direction, respectively. The input optical beams are orthogonal and linearly polarized, and their amplitudes are modulated in quadrature. We show that the combination of amplitude-only filters and the π phase-shifting per quadrant can achieve the implementation of complex filters such as the sinusoidal ones. The combination of the spatial modulation of both amplitude and phase generates an optical field with radial polarization. Specialized optical elements of high cost and SLM devices are avoided. We show the theoretical model and experimental results.

KW - Ronchi ruling

KW - cylindrical vector beam

KW - diffraction

KW - phase-shifting

KW - polarization

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DO - 10.1088/2040-8986/ab1410

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JO - Journal of Optics (United Kingdom)

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