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

Vetter, Christian; Steinkopf, Ralf; Bergner, Klaus; Ornigotti, Marco; Nolte, Stefan; Groß, Herbert; Szameit, Alexander

doi:10.1002/lpor.201900103

Cited by 62 publications

(26 citation statements)

References 30 publications

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“…Generation of Bessel beams in free space reaching, to the best of our knowledge, diffraction-free propagation distances of several meters at optical wavelength, as reported in Ref. 18 . The key optical component used, is a ring-lens which resembles a cylindrical lens that is morphed to a closed ring-like form.…”

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confidence: 57%

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Zeroth- and first-order long range non-diffracting Gauss–Bessel beams generated by annihilating multiple-charged optical vortices

Stoyanov

Zhekova

Stefanov

et al. 2020

Sci Rep

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We demonstrate an alternative approach for generating zeroth- and first-order long range non-diffracting Gauss–Bessel beams (GBBs). Starting from a Gaussian beam, the key point is the creation of a bright ring-shaped beam with a large radius-to-width ratio, which is subsequently Fourier-transformed by a thin lens. The phase profile required for creating zeroth-order GBBs is flat and helical for first-order GBBs with unit topological charge (TC). Both the ring-shaped beam and the required phase profile can be realized by creating highly charged optical vortices by a spatial light modulator and annihilating them by using a second modulator of the same type. The generated long-range GBBs are proven to have negligible transverse evolution up to 2 m and can be regarded as non-diffracting. The influences of the charge state of the TCs, the propagation distance behind the focusing lens, and the GBB profiles on the relative intensities of the peak/rings are discussed. The method is much more efficient as compared to this using annular slits in the back focal plane of lenses. Moreover, at large propagation distances the quality of the generated GBBs significantly surpasses this of GBBs created by low angle axicons. The developed analytical model reproduces the experimental data. The presented method is flexible, easily realizable by using a spatial light modulator, does not require any special optical elements and, thus, is accessible in many laboratories.

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confidence: 57%

“…As in Refs. 5,18 , the key point is the creation of a bright ring-shaped beam with a large ring radius-to-width ratio, which is subsequently Fourier-transformed by a thin lens. However, in contrast to previous works, our approach is entirely based on linear singular optics.…”

mentioning

confidence: 99%

Zeroth- and first-order long range non-diffracting Gauss–Bessel beams generated by annihilating multiple-charged optical vortices

Stoyanov

Zhekova

Stefanov

et al. 2020

Sci Rep

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show abstract

“…A novel method for creating long-distance self-recovering BBs generated by an annular lens and a 4f-configuration spherical lens is stated in [ 121 ]. This shows the diffraction-free light evolution of a zeroth-order BBs over several meters and addresses the available scaling prospects that exceed present technologies.…”

Section: Free-space Long-distance Self-healing Bbsmentioning

confidence: 99%

Bessel Beam: Significance and Applications—A Progressive Review

et al. 2020

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Diffraction is a phenomenon related to the wave nature of light and arises when a propagating wave comes across an obstacle. Consequently, the wave can be transformed in amplitude or phase and diffraction occurs. Those parts of the wavefront avoiding an obstacle form a diffraction pattern after interfering with each other. In this review paper, we have discussed the topic of non-diffractive beams, explicitly Bessel beams. Such beams provide some resistance to diffraction and hence are hypothetically a phenomenal alternate to Gaussian beams in several circumstances. Several outstanding applications are coined to Bessel beams and have been employed in commercial applications. We have discussed several hot applications based on these magnificent beams such as optical trapping, material processing, free-space long-distance self-healing beams, optical coherence tomography, superresolution, sharp focusing, polarization transformation, increased depth of focus, birefringence detection based on astigmatic transformed BB and encryption in optical communication. According to our knowledge, each topic presented in this review is justifiably explained.

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“…Further, while the distance in the laboratory was negligible, PVs have been collimated and sent over a free‐space communication link, [ 34 ] while their Fourier transformed state (Bessel beams) are likewise viable for long distance communication. [ 35,36 ] As such, real‐world deployment of our approach is feasible with appropriate engineering.…”

Section: Figurementioning

confidence: 99%

Experimental Demonstration of 11‐Dimensional 10‐Party Quantum Secret Sharing

Pinnell

Nape

Oliveira

et al. 2020

Laser & Photonics Reviews

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Quantum secret sharing is the art of securely sharing information between more than two people in such a way that its reconstruction requires the collaboration of a certain number of parties. Here, by taking advantage of the high‐dimensional Hilbert space for orbital angular momentum and using Perfect Vortex beams as their carriers, a proof‐of‐principle implementation of a high‐dimensional quantum secret sharing scheme is presented. This scheme is experimentally implemented with a fidelity of 93.4%, for 10 participants in d=11 dimensions—the highest number of participants and dimensions to date. The implementation can easily be scaled to higher dimensions and any number of participants, opening the way for securely distributing information across a network of nodes.

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

Cited by 62 publications

References 30 publications

Zeroth- and first-order long range non-diffracting Gauss–Bessel beams generated by annihilating multiple-charged optical vortices

Zeroth- and first-order long range non-diffracting Gauss–Bessel beams generated by annihilating multiple-charged optical vortices

Bessel Beam: Significance and Applications—A Progressive Review

Experimental Demonstration of 11‐Dimensional 10‐Party Quantum Secret Sharing

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