Dynamic evolution of transverse energy flow in focused asymmetric optical vector-vortex beams
Dynamic evolution of transverse energy flow in focused asymmetric optical vector-vortex beams
We present here controlled generation of asymmetric optical vector-vortex beams using a two-mode optical fiber and study the dynamic evolution of the transverse energy flow (TEF) when focused through a spherical lens. The dependence of the TEF on various factors such as the vortex charge, vortex anisotropy and polarization structure around the vortex core is explored. It is found that the TEF is directly proportional to the phase gradient and its direction is governed by the vortex charge. The presence of C-point polarization singularity in the beam and the polarization structure around it results in vibrational phase gradient which is the major factor deciding the TEF in vector-vortex beams.
4866-4873
Kumar, Vijay
aff08f26-70e9-4db3-a299-8c43ccefccba
Inavalli, Veera
db7ab576-a272-4f04-b938-3d1772ffbd01
Viswanathan, Nirmal K.
303892a1-3840-491b-9272-b2bd1d76556e
1 November 2012
Kumar, Vijay
aff08f26-70e9-4db3-a299-8c43ccefccba
Inavalli, Veera
db7ab576-a272-4f04-b938-3d1772ffbd01
Viswanathan, Nirmal K.
303892a1-3840-491b-9272-b2bd1d76556e
Kumar, Vijay, Inavalli, Veera and Viswanathan, Nirmal K.
(2012)
Dynamic evolution of transverse energy flow in focused asymmetric optical vector-vortex beams.
Optics Communications, 285 (24), .
(doi:10.1016/j.optcom.2012.08.038).
Abstract
We present here controlled generation of asymmetric optical vector-vortex beams using a two-mode optical fiber and study the dynamic evolution of the transverse energy flow (TEF) when focused through a spherical lens. The dependence of the TEF on various factors such as the vortex charge, vortex anisotropy and polarization structure around the vortex core is explored. It is found that the TEF is directly proportional to the phase gradient and its direction is governed by the vortex charge. The presence of C-point polarization singularity in the beam and the polarization structure around it results in vibrational phase gradient which is the major factor deciding the TEF in vector-vortex beams.
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Accepted/In Press date: 13 August 2012
e-pub ahead of print date: 3 September 2012
Published date: 1 November 2012
Additional Information:
Copyright © 2012 Elsevier B.V.
Identifiers
Local EPrints ID: 467275
URI: http://eprints.soton.ac.uk/id/eprint/467275
ISSN: 0030-4018
PURE UUID: f1864e4c-894a-4134-99fe-37e396e20622
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Date deposited: 05 Jul 2022 16:37
Last modified: 17 Mar 2024 04:04
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Contributors
Author:
Vijay Kumar
Author:
Veera Inavalli
Author:
Nirmal K. Viswanathan
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