Hc. Pedersen et al., OBSERVATION OF SPONTANEOUSLY FREQUENCY-SHIFTED BEAM FANNING IN PHOTOREFRACTIVE BI12SIO20, Optics letters, 20(24), 1995, pp. 2475-2477
We present several new characteristics of beam fanning in a bulk sampl
e of Bi12SiO20 with a dc electric field Significant dependence of the
beam fanning on the polarization state of the incident laser beam More
over, the fanning light experiences a spontaneous frequency shift with
respect to the incident light that ensures maximum beam coupling, bec
ause of which the fanning itself can exist. (C) 1995 Optical Society o
f America