Arrangement for producing a Bessel beam

US11372254B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Ralf Steinkopf · Jena, DE
• Stefan Nolte · Jena, DE
• Christian Vetter · Besançon, FR
• Alexander Szameit · Bad Doberan, DE
• Herbert Gross · Santa Ana, US
• Marco Ornigotti · Tampere, FI

Key dates

• Filing date: Jun 22, 2017
• Grant date: Jun 28, 2022
• Expiry date: Feb 7, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B27/0961
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to an arrangement for producing a Bessel beam (5), comprising a beam-forming element (2), which transforms a beam (1) incident as a plane electromagnetic wave into a Bessel beam (5). According to the invention, the beam-forming element (2) comprises at least one annular lens (3, 3′) and a Fourier optical unit, e.g. in the form of a Fourier lens (4).