When a guided mode is excited in a dielectric slab coupled to a backward surface wave at the interface between a dielectric and a left-handed medium, light is confined in the structure: this is a light wheel. Complex plane analysis of the dispersion relation and coupled-mode formalism give deep insight into the physics of this phenomenon (lateral confinement and the presence of a dark zone).
© 2010 Optical Society of America
Original Manuscript: April 20, 2010
Revised Manuscript: September 6, 2010
Manuscript Accepted: September 6, 2010
Published: September 23, 2010
Rémi Pollès, Antoine Moreau, and Gérard Granet, "Light wheel buildup using a backward surface mode," Opt. Lett. 35, 3237-3239 (2010)