We demonstrate the existence of elliptic vortices of electromagnetic scalar wave fields. The corresponding intensity profiles are formed by propagation-invariant confocal elliptic rings. We have found that copropagation of this kind of vortex occurs without interaction. The results presented here also apply for physical systems described by the (2+1) -dimensional Schrödinger equation.
© 2001 Optical Society of America
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(260.1960) Physical optics : Diffraction theory
(260.2110) Physical optics : Electromagnetic optics
(350.5500) Other areas of optics : Propagation
S. Chávez-Cerda, J. C. Gutiérrez-Vega, and G. H. C. New, "Elliptic vortices of electromagnetic wave fields," Opt. Lett. 26, 1803-1805 (2001)