We demonstrate the existence of a stable black self-guided beam of circular symmetry in a bulk self-defocusing Kerr medium. There are no gray or higher-order self-guided beams of circular symmetry. The stability of black beams of circular symmetry is in sharp contrast to analogous bright beams in a self-focusing medium, which are unstable. Black self-guided beams are ideal for all-optical devices in bulk material as they can induce a single-mode optical fiber to guide a (weak) signal beam.
© 1992 Optical Society of America
Original Manuscript: January 21, 1992
Published: June 1, 1992
A. W. Snyder, L. Poladian, and D. J. Mitchell, "Stable black self-guided beams of circular symmetry in a bulk Kerr medium," Opt. Lett. 17, 789-791 (1992)