Characterization of Bessel beams generated by polymeric microaxicons
Authors: Merola F., Coppola S., Vespini V., Grilli S., Ferraro P.
Autors Affiliation: Istituto Nazionale di Ottica (CNR-INO), Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy; Dip. Ingegneria Materiali e Strutture, Università di Napoli ‘Federico II’, Piazzale Tecchio 80, 80125 Napoli, Italy
Abstract: We present a quick, simple and accurate digital holographic characterization of the Bessel beams produced by polymeric microaxicons. This technique allows the numerical reconstruction of both intensity and phase of the beam at whichever point starting from a single acquired hologram. From these data, it is possible to go back to the axicon structure, and to gather information about their characteristics. In particular, the focal length and the depth of focus of the axicon lens are experimentally measured, and the full width at half maximum of the beam is obtained too. The depth of focus, very large for a Bessel beam with respect to a Gaussian one, is successfully exploited for optical trapping of micrometric objects.
Journal/Review: MEASUREMENT SCIENCE & TECHNOLOGY
Volume: 23 (6) Pages from: 065204 to: 065204
KeyWords: Bessel beams; digital holography; microaxiconsDOI: 10.1088/0957-0233/23/6/065204Citations: 16data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-09-15References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here