Optical vortices with large orbital momentum: generation and interference

Opt Express. 2006 Apr 3;14(7):2888-97. doi: 10.1364/oe.14.002888.

Abstract

We demonstrate a method for generation of beams of light with large angular momenta. The method utilizes whispering gallery mode resonators that transform a plane electromagnetic wave into high order Bessel beams. Interference pattern among the beams as well as shadow pictures induced by the beams are observed and studied.