Abstract

The interference of Laguerre–Gaussian beams carrying orbital angular momentum was demonstrated in Young’s double-slit geometry. Double-slit interference is shown to be affected by the azimuthal phase dependence of a Laguerre–Gaussian beam. This interference provides new insight into the helical phase structure of the Laguerre–Gaussian beam and has potential applications for measuring the orbital angular momentum of an arbitrary wavefront.

© 2006 Optical Society of America

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