We report what is to our knowledge the first observation of fundamental dark spatial solitons. The solitons are launched in bulk semiconductors using an initial condition with odd symmetry. In order to form the initial condition, a glass platelet is positioned in one half of an incident 30-psecpulse, creating a π phase shift in the spatial profile. Several propagation parameters for the solitons are measured experimentally, and good agreement with theory is obtained.
© 1991 Optical Society of America
Original Manuscript: July 6, 1990
Manuscript Accepted: October 25, 1990
Published: February 1, 1991
G. R. Allan, S. R. Skinner, D. R. Andersen, and A. L. Smirl, "Observation of fundamental dark spatial solitons in semiconductors using picosecond pulses," Opt. Lett. 16, 156-158 (1991)