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Proceedings Paper

Beam shaping using topological axicons (Conference Presentation)
Author(s): Artur Aleksanyan; Albertas Žukauskas; Benjamin Sanchez-Padilla; Mangirdas Malinauskas; Etienne Brasselet

Paper Abstract

Controlling the angular spectrum content of light fields is a basic beam shaping strategy implying the control of the wavevector distribution. Here we propose a novel class of refractive optical elements generated by folding the conical surface of a usual (conical) axicon. In particular, we explore folding processes where the continuous deformation of the circular cross-section of an axicon lead to the appearance of geometrical singularities (cusps). This is illustrated considering two prototypical families derived from hypocycloidal and epicycloidal geometries. Such topological axicons have been fabricated at the micron scale by using photopolymerization technique and characterized both experimentally and theoretically.

Paper Details

Date Published: 7 November 2016
PDF: 1 pages
Proc. SPIE 9950, Laser Beam Shaping XVII, 99500N (7 November 2016); doi: 10.1117/12.2237131
Show Author Affiliations
Artur Aleksanyan, Univ. Bordeaux 1 (France)
Albertas Žukauskas, Vilnius Univ. (Lithuania)
Benjamin Sanchez-Padilla, Univ. Bordeaux 1 (France)
Mangirdas Malinauskas, Vilnius Univ. (Lithuania)
Etienne Brasselet, Univ. Bordeaux 1 (France)

Published in SPIE Proceedings Vol. 9950:
Laser Beam Shaping XVII
Andrew Forbes; Todd E. Lizotte, Editor(s)

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