We introduce a novel type of surface waves that form at the edge of guiding structures consisting of several concentric rings. Such surface waves rotate steadily upon propagation and, in contrast with nonrotating waves, for high rotation frequencies they do not exhibit power thresholds for their existence. There exists an upper limit for the surface wave rotation frequency, which depends on the radius of the outer guiding ring and on its depth.
© 2007 Optical Society of America
Original Manuscript: July 25, 2007
Manuscript Accepted: August 21, 2007
Published: October 5, 2007
Yaroslav V. Kartashov, Victor A. Vysloukh, and Lluis Torner, "Rotating surface solitons," Opt. Lett. 32, 2948-2950 (2007)