Observation of multiramp fractional vortex beams and their total vortex strength in free space

@article{Wen2019ObservationOM,
  title={Observation of multiramp fractional vortex beams and their total vortex strength in free space},
  author={Jisen Wen and Binjie Gao and Guiyuan Zhu and Yi-Bing Cheng and Shi-Yao Zhu and Li-Gang Wang},
  journal={arXiv: Optics},
  year={2019}
}

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  • UnEng Bur
  • Materials Science, Physics
  • 2020
1Department of Physics and Optical Science, The University of North Carolina at Charlotte, Charlotte, North Carolina 28223, USA 2Shandong Provincial Engineering and Technical Center of Light

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References

SHOWING 1-10 OF 37 REFERENCES

Vortex strength and beam propagation factor of fractional vortex beams.

TLDR
It is verified that the jumps of total vortex strength for FVBs happen only when non-integer topological charge is before and after (but very close to) any even integer number that originates from two different mechanisms for generation and movement of vortices on focal plane.

Probing the fractional topological charge of a vortex light beam by using dynamic angular double slits

Vortex beams with fractional topological charge (FTC) have many special characteristics and novel applications. However, one of the obstacles for their application is the difficulty of precisely

Analysis of optical vortex beams with integer and fractional topological charge

This work presents an analysis of optical vortex beams with integer and fractional topological charges, produced by binary computer-generated holograms. In the case of integer topological charge,

Generation of fractional acoustic vortex with a discrete Archimedean spiral structure plate

Artificial structure plates engraved with discrete Archimedean spiral slits have been well designed to achieve fractional acoustic vortices (FAVs). The phase and pressure field distributions of FAVs

Observation of the vortex structure of a non-integer vortex beam

An optical beam with an eilϕ phase structure carries an orbital angular momentum of lℏ per photon. For integer l values, the phase fronts of such beams form perfect helices with a single screw-phase

Coaxial superposition of Bessel beams by discretized spiral axicons

BackgroundA diffractive spiral axicon can be used for the generation of a vortex beam with orbital angular momentum. The coaxial superposition of multiple vortices can generate a complex field with

Is it possible to create a perfect fractional vortex beam

Laguerre–Gaussian beams of integer azimuthal index satisfy the fundamental principle of quantization of orbital angular momentum. Here, we consider light-induced orbiting of a trapped microparticle

Study of the birth of a vortex at Fraunhofer zone.

TLDR
The Fraunhofer diffraction of an optical vortex beam possessing noninteger values of the azimuthal index shows the birth of a vortex at α=n+ε, where n is an integer number and ε is a small fraction.

Optical vortices evolving from helicoidal integer and fractional phase steps

The evolution of a wave starting at z = 0a s exp(iαφ) (0 φ 0as trength n optical vortex, whose neighbourhood is described in detail. Far from the axis, the wave is the sum of exp{i(αφ + kz)} and a