2026-04-17T03:02:51Zhttps://recercat.cat/oai/request
oai:recercat.cat:2445/1492892025-11-19T20:26:48Zcom_2072_1057col_2072_478822col_2072_478917
RECERCAT author Ortiz-Ambriz, Antonio author López-Aguayo, Servando author Kartashov, Yaroslva V. author Vysloukh, Victor A. author Petrov, Dmitry author Garcia-Gracia, Hipólito author Gutiérrez-Vega, Julio C. author Torner i Sabata, Lluís 2020-02-03T15:46:26Z2020-02-03T15:46:26Z2013-09-122020-02-03T15:46:27Z 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. (c) Optical Society of America, 2013 info:eu-repo/semantics/openAccess Òptica física Fotònica Physical optics Photonics Generation of arbitrary complex quasi-non-diffracting optical patterns info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion