We study experimentally self-trapping of optical beams in photorefractive media and show that the trapping is inherently asymmetric with respect to the two (transverse) trapping dimensions. We also present experimental results that show how the sizes of the resultant photorefractive spatial solitons are independent (within their range of existence) of the amplitude of the externally applied electric field used to generate them.
© 1994 Optical Society of America
Galen Duree, Gregory Salamo, Mordechai Segev, Amnon Yariv, Bruno Crosignani, Paolo Di Porto, and Edward Sharp, "Dimensionality and size of photorefractive spatial solitons," Opt. Lett. 19, 1195-1197 (1994)