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Generation of Optical Vortex Beams by Nonlinear Wave Mixing

Summary: Generation of Optical Vortex Beams by
Nonlinear Wave Mixing
Alon Bahabad and Ady Arie
School of Electrical Engineering, Wolfson Faculty of Engineering, Tel Aviv University
Tel Aviv 69978, Israel
Abstract: It is shown that optical vortex beams can be generated from a
non-vortex fundamental beam by an optical frequency conversion process
taking place within a twisted nonlinear photonic crystal. This is done
without any first-order (linear) refractive optics. Through such a proposed
structure, all-optical switching of vortices with different helicities is made
possible, as well as the simultaneous application of counter-rotating vortex
beams of different frequencies.
2007 Optical Society of America
OCIS codes: (190.0190) Nonlinear optics; (190.2620) Harmonic generation and mixing optical
vortex beams; (190.4223) Nonlinear wave mixing.
References and links
1. J. F. Nye and M. V. Berry, "Dislocations in Wave Trains," Royal Society of London Proceedings Series A 336,
165190 (1974).
2. L. Allen, M. W. Beijersbergen, R. J. C. Spreeuw, and J. P. Woerdman, "Orbital angular momentum of light and


Source: Arie, Ady - Department of Electrical Engineering-Physical Electronics, Tel Aviv University


Collections: Engineering