Vortex array generation by interference of spherical waves

Abstract

Interferometric methods of vortex generation involve the interference of three or more plane waves. We show that spherical wave interference can produce vortex lattices similar to the one produced in the three-beam interference of plane waves. Three spherical waves of the same curvature are made to interfere in a shear interferometer introduced in a Mach–Zehnder configuration.

© 2007 Optical Society of America

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