Realization of Free‐Space Long‐Distance Self‐Healing Bessel Beams

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 4f‐configuration, is reported. With this, diffraction‐free light evolution of a zeroth order Bessel beam over several meters is shown and available scaling op...

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Bibliographic Details
Published in:Laser & photonics reviews 2019-10, Vol.13 (10), p.n/a
Main Authors: Vetter, Christian, Steinkopf, Ralf, Bergner, Klaus, Ornigotti, Marco, Nolte, Stefan, Gross, Herbert, Szameit, Alexander
Format: Article
Language:English
Subjects:
Beams (radiation)
beam‐shaping
Bessel‐beams
Conveyors
Healing
laser‐technology
Light diffraction
self‐healing
telecommunication
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Summary: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 4f‐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. 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 4f‐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.
ISSN:1863-8880
1863-8899
DOI:10.1002/lpor.201900103