We demonstrate experimentally optical guidance of coherent light beams, using incoherent light. Such guidance is made possible by generation of partially spatially incoherent self-trapped dark beams (dark incoherent solitons) in a noninstantaneous nonlinear medium. In the one-dimensional case, the incoherent solitons induce single and Y-junction planar waveguides, whereas in the two-dimensional case, they form circular waveguides. These experiments introduce the possibility of controlling high-power laser beams with low-power incoherent light sources such as LED’s or lightbulbs.
© 1999 Optical Society of America
(130.2790) Integrated optics : Guided waves
(140.7010) Lasers and laser optics : Laser trapping
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(230.7370) Optical devices : Waveguides
Zhigang Chen, Mordechai Segev, Demetrios N. Christodoulides, and Robert S. Feigelson, "Waveguides formed by incoherent dark solitons," Opt. Lett. 24, 1160-1162 (1999)