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Title: Generation of arbitrary complex quasi-non-diffracting optical patterns
Author: Ortiz-Ambriz, Antonio
López-Aguayo, Servando
Kartashov, Yaroslva V.
Vysloukh, Victor A.
Petrov, Dmitry
Garcia-Gracia, Hipólito
Gutiérrez-Vega, Julio C.
Torner i Sabata, Lluís
Keywords: Òptica física
Physical optics
Issue Date: 12-Sep-2013
Publisher: Optical Society of America
Abstract: Due to their unique ability to maintain an intensity distribution upon propagation, non-diffracting light fields are used extensively in various areas of science, including optical tweezers, nonlinear optics and quantum optics, in applications where complex transverse field distributions are required. However, the number and type of rigorously non-diffracting beams is severely limited because their symmetry is dictated by one of the coordinate system where the Helmholtz equation governing beam propagation is separable. Here, we demonstrate a powerful technique that allows the generation of a rich variety of quasi-non-diffracting optical beams featuring nearly arbitrary intensity distributions in the transverse plane. These can be readily engineered via modifications of the angular spectrum of the beam in order to meet the requirements of particular applications. Such beams are not rigorously non-diffracting but they maintain their shape over large distances, which may be tuned by varying the width of the angular spectrum. We report the generation of unique spiral pat-terns and patterns involving arbitrary combinations of truncated harmonic, Bessel, Mathieu, or parabolic beams occupying different spatial domains. Optical trapping experiments illustrate the opto-mechanical properties of such beams.
Note: Reproducció del document publicat a:
It is part of: Optics Express, 2013, vol. 21, num. 19, p. 22221-22231
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ISSN: 1094-4087
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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