Propagation dynamics of vortices in Helico-Conical optical beams

We present the dynamics of optical vortices (OVs) that came from the propagation of helico-conical optical beam. This dynamics is investigated numerically by tracking the OVs at several distances using rigorous scalar diffraction theory. To ensure that our numerical calculations are correct, we comp...

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Bibliographic Details
Published in:arXiv.org 2015-08
Main Authors: Bareza, Nestor, Hermosa, Nathaniel
Format: Article
Language:English
Subjects:
Axis movements
Beams (radiation)
Computational fluid dynamics
Computer simulation
Diffraction theory
Energy flow
Fluid flow
Internal energy
Propagation
Vortices
Wave propagation
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Summary:We present the dynamics of optical vortices (OVs) that came from the propagation of helico-conical optical beam. This dynamics is investigated numerically by tracking the OVs at several distances using rigorous scalar diffraction theory. To ensure that our numerical calculations are correct, we compare the intensity profiles and their corresponding interferograms taken at different propagation distances between simulations and experiments. We observe that the peripheral isopolar vortices transport radially inward, toward the optical axis along the transverse spatial space as the beam propagates. When the beam has a central vortex, these vortices have significant induced angular rates of motion about the optical axis. These propagation dynamics of vortices influence the internal energy flow and the wave profile reconstruction of the beam, which can be important when deciding their applications.
ISSN:2331-8422
DOI:10.48550/arxiv.1505.07962