Generation of optical vortex beams by nonlinear wave mixing

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)17619-17624
Number of pages6
JournalOptics Express
Issue number26
StatePublished - 24 Dec 2007


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