The model equations for beam propagation in photorefractive material are simplified under appropriate conditions. The possibility of obtaining bright and dark screening soliton solutions in 2+1 dimensions is investigated, and, whenever possible, their amplitude–size relation is displayed.
© 1997 Optical Society of America
Bruno Crosignani, Paolo Di Porto, Antonio Degasperis, Mordechai Segev, and Stefano Trillo, "Three-dimensional optical beam propagation and solitons in photorefractive crystals," J. Opt. Soc. Am. B 14, 3078-3090 (1997)