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2013-09-12

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/149289

Generation of arbitrary complex quasi-non-diffracting optical patterns

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https://doi.org/10.1364/OE.21.022221

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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.

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Òptica física, Fotònica

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Physical optics, Photonics

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Articles publicats en revistes (Física de la Matèria Condensada)

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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. Generation of arbitrary complex quasi-non-diffracting optical patterns. _Optics Express_. 2013. Vol. 21, núm. 19, pàgs. 22221-22231. [consulta: 22 de gener de 2026]. ISSN: 1094-4087. [Disponible a: https://hdl.handle.net/2445/149289]

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