Journal
OPTICS COMMUNICATIONS
Volume 356, Issue -, Pages 236-242Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2015.08.005
Keywords
Optical vortices; Wave propagation; Laser beam shaping
Categories
Funding
- Office of the Vice President for Academic Affairs, UP system
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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. (C) 2015 Elsevier B.V. All rights reserved.
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