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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 4 — Apr. 1, 2014
  • pp: 798–805

Does the optical angular momentum change smoothly in fractional-charged vortex beams?

Tatyana A. Fadeyeva, Alexander F. Rubass, Rodion V. Aleksandrov, and Aleksander V. Volyar  »View Author Affiliations


JOSA B, Vol. 31, Issue 4, pp. 798-805 (2014)
http://dx.doi.org/10.1364/JOSAB.31.000798


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Abstract

We consider the oscillations of the orbital angular momentum in the vortex beams with fractional topological charges, taking into account the vortex influence, beam astigmatism, and the displacement of the center of gravity on the basis of the intensity momenta approach. We revealed also that base contribution gives the optical vortices and displacement of the center of gravity. In addition, we analyze the distribution of the current lines in the erf-G beams with the topological charge p=1/2, revealing that there are two types of the curves: (1) closed C-like lines and (2) the inner closed lines.

© 2014 Optical Society of America

OCIS Codes
(260.0260) Physical optics : Physical optics
(140.3295) Lasers and laser optics : Laser beam characterization
(260.6042) Physical optics : Singular optics

ToC Category:
Physical Optics

History
Original Manuscript: December 17, 2013
Revised Manuscript: January 30, 2014
Manuscript Accepted: February 1, 2014
Published: March 13, 2014

Citation
Tatyana A. Fadeyeva, Alexander F. Rubass, Rodion V. Aleksandrov, and Aleksander V. Volyar, "Does the optical angular momentum change smoothly in fractional-charged vortex beams?," J. Opt. Soc. Am. B 31, 798-805 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-4-798

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