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TitleGeneration of optical Bessel beams with arbitrarily curved trajectories using a magnetic-liquid deformable mirror.
Publication TypeJournal Article
Year of Publication2018
AuthorsFortin, Mathieu, Michel Piché, Denis Brousseau, and Simon Thibault
JournalAppl Opt
Volume57
Issue21
Pagination6135-6144
Date Published2018 Jul 20
ISSN1539-4522
Abstract

We propose a new strategy to curve the trajectory of the central lobe of a zero-order Bessel beam and a first-order Bessel beam along their propagation axis. Our method involves modifying the phase of a beam that is incident on an adaptive mirror. As examples, we show that the most intense lobe of the beam can follow a parabolic trajectory, a cubic trajectory, or a trajectory made by a combination of these orders. By using a phase correction emulating the effect of cylindrical mirrors, the central lobe always preserves its symmetry. Theoretical simulations were reproduced in the laboratory using a magnetic-liquid deformable mirror. The parabolic trajectory of the 60-μm central spot of a zero-order Bessel beam exhibits a 0.6-mm off-axis shift after 30-cm-length propagation.

DOI10.1364/AO.57.006135
Alternate JournalAppl Opt
PubMed ID30117994