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Determination of the topological charge of a bessel-gauss beam using the diffraction pattern through of an equilateral aperture

Acevedo, Cristian Hernando and Díaz, Carlos Fernando and Torres-Moreno, Yezid (2015) Determination of the topological charge of a bessel-gauss beam using the diffraction pattern through of an equilateral aperture. DYNA, 82 (190). pp. 214-220. ISSN 2346-2183

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Resumen

The topological charge TC of an electromagnetic wave is relate with their wavefront spatial distribution. Electromagnetic waves with factor azimuthal exp(ilθ) in its phase, have TC integer (l=m) or non-integer (l=M). These electromagnetic waves with a well-defined of TC can be produced in the visible regime by computer generated holographic masks with fork shaped. In this paper, we study the formed triangle lattice distribution in the intensity Fraunhofer regime using numerical simulations of the Bessel-Gauss beams with integer and non-integer TC. The beam is diffracted by equilateral triangular aperture to measure both their sign and magnitude. In addition, we showed the experimental results of the intensity in far field regime product of diffraction of Bessel-Gauss beams with integer and noninteger TC by the equilateral triangular aperture. Partial and qualitative explanations have been proposed for the diffraction of electromagnetic beams with topological charge. This paper presents a complete analysis for qualitative and quantitative explanation of diffraction of a beam with topological charge by a triangular aperture. The results of such diffraction are obtained by numerical simulation or experimentally.

Tipo de documento:Artículo - Article
Palabras clave:Bessel-Gauss beam, Topological charge of the light (TC), integer TC, non-integer TC, Triangular aperture.
Temática:6 Tecnología (ciencias aplicadas) / Technology > 62 Ingeniería y operaciones afines / Engineering
Unidad administrativa:Revistas electrónicas UN > Dyna
Código ID:59085
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :31 Oct 2017 17:20
Ultima modificación:27 Noviembre 2017 22:06
Ultima modificación:27 Noviembre 2017 22:06
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