Elliptical discrete solitons supported by enhanced photorefractive anisotropy.
We demonstrate elliptical discrete solitons in an optically induced two-dimensional photonic lattice. The ellipticity of the discrete soliton results from enhanced photorefractive anisotropy and nonlocality under a nonconventional bias condition. We show that the ellipticity and orientation of the discrete solitons can be altered by changing the direction of the lattice beam and/or the bias field relative to the crystalline c-axis. Our experimental results are in good agreement with the theoretical prediction.
Institute of Optical Information Science and Technology and Shaanxi Key Laboratory of Optical InformationTechnology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
Peng
P
Zhang
Jianlin
J
Zhao
Fajun
F
Xiao
Cibo
C
Lou
Jingjun
J
Xu
Zhigang
Z
Chen
D016880:Anisotropy; D003198:Computer Simulation; D008027:Light; D008962:Models, Theoretical; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation