Realization of Free‐Space Long‐Distance Self‐Healing Bessel Beams. Issue 10 (13th September 2019)

• Record Type: Journal Article
• Authors: Vetter, Christian; Steinkopf, Ralf; Bergner, Klaus; Ornigotti, Marco; Nolte, Stefan; Gross, Herbert; Szameit, Alexander
• Is Part Of: Laser & photonics reviews. Volume 13:Issue 10(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-09-13
• Subjects: beam‐shaping -- Bessel‐beams -- laser‐technology -- self‐healing -- telecommunication; Lasers -- Periodicals; Photonics -- Periodicals; Lasers -- Périodiques; Photonique -- Périodiques; 621.36
• DOI: 10.1002/lpor.201900103
• Languages: English
• ISSNs: 1863-8880

Abstract

Abstract: A new approach for generating long‐distance self‐healing Bessel beams, which is based on a ring‐shaped (annular) lens and a spherical lens in 4 f ‐configuration, is reported. With this, diffraction‐free light evolution of a zeroth order Bessel beam over several meters is shown and available scaling opportunities that surpass current technologies by far are discussed. Furthermore, it is demonstrated how this setup can be adapted to create Bessel beam superpositions, realizing the longest ever reported optical conveyor beam and helicon beam, respectively. Last, the self‐healing capabilities of the beams are tested against strong opaque and non‐opaque scatterers, which again emphasizes the great potential of this new method. Abstract : A new method for generating long‐distance self‐healing Bessel beams is reported. A ring‐shaped (annular) lens and a spherical lens are used in 4 f ‐configuration. With this, diffraction‐free light evolution over several meters is reported and further scaling opportunities are discussed. Moreover, Bessel beam superpositions are realized using this method and self‐healing capabilities are studied.