TY - JOUR
T1 - Nonlinear optical diffraction effects and solitons due to anisotropic charge-diffusion-based self-interaction
AU - Crosignani, B.
AU - Degasperis, A.
AU - Del Re, E.
AU - Di Porto, P.
AU - Agranat, A. J.
PY - 1999
Y1 - 1999
N2 - We report the first observation of self-modified optical diffraction, beam ellipticity recovery and conservation, and intensity independent self-focusing in an anisotropic diffusion-type nonlinearity realized in ferroelectrics heated above the centrosymmetric transition. The interaction, a photorefractive diffusion-driven quadratic nonlinearity, constitutes the first known natural realization of a higher-order logarithmic nonlinearity and allows an analytical description of the observed phenomena and the prediction of a class of noncircular solitons with no characteristic length scale.
AB - We report the first observation of self-modified optical diffraction, beam ellipticity recovery and conservation, and intensity independent self-focusing in an anisotropic diffusion-type nonlinearity realized in ferroelectrics heated above the centrosymmetric transition. The interaction, a photorefractive diffusion-driven quadratic nonlinearity, constitutes the first known natural realization of a higher-order logarithmic nonlinearity and allows an analytical description of the observed phenomena and the prediction of a class of noncircular solitons with no characteristic length scale.
UR - https://www.scopus.com/pages/publications/0033593746
U2 - 10.1103/PhysRevLett.82.1664
DO - 10.1103/PhysRevLett.82.1664
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0033593746
SN - 0031-9007
VL - 82
SP - 1664
EP - 1667
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
ER -