Abstract
In a recent article1 we proposed the first stable self-trapped beams in (2 + 1)D cubic self-focusing NLSE, the so-called Necklace-ring beams. Necklace beams are shaped like rings whose thickness w is much smaller than their radius R, and whose intensity is azimuthaly periodically modulated, as in the first plot of Fig. 1.
© 2000 Optical Society of America
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