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Title: Synthesis of highly focused fields with circular polarization at any transverse plane
Author: Maluenda Niubó, David
Martínez-Herrero, Rosario
Juvells Prades, Ignacio
Carnicer González, Arturo
Keywords: Holografia
Polarització (Llum)
Camps electromagnètics
Polarization (Light)
Electromagnetic fields
Issue Date: 17-Mar-2014
Publisher: Optical Society of America
Abstract: We develop a method for generating focused vector beams with circular polarization at any transverse plane. Based on the Richards-Wolf vector model, we derive analytical expressions to describe the propagation of these set of beams near the focal area. Since the polarization and the amplitude of the input beam are not uniform, an interferometric system capable of generating spatially-variant polarized beams has to be used. In particular, this wavefront is manipulated by means of spatial light modulators displaying computer generated holograms and subsequently focused using a high numerical aperture objective lens. Experimental results using a NA=0.85 system are provided: irradiance and Stokes images of the focused field at different planes near the focal plane are presented and compared with those obtained by numerical simulation.
Note: Reproducció del document publicat a:
It is part of: Optics Express, 2014, vol. 22, num. 6, p. 6859-6867
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ISSN: 1094-4087
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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