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.
Zhang
Peng
P
Institute of Optical Information Science and Technology and Shaanxi Key Laboratory of Optical InformationTechnology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.
Zhao
Jianlin
J
Xiao
Fajun
F
Lou
Cibo
C
Xu
Jingjun
J
Chen
Zhigang
Z
D016880:Anisotropy; D003198:Computer Simulation; D008027:Light; D008962:Models, Theoretical; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation