N. Fressengeas et al., BUILD UP MECHANISMS OF (1-DIMENSIONAL PHOTOREFRACTIVE BRIGHT SPATIAL QUASI-STEADY-STATE AND SCREENING SOLITONS(1)), Optics communications, 145(1-6), 1998, pp. 393-400
A (1 + 1)-dimensional model is studied numerically to evidence the bui
ld up mechanisms of photorefractive solitons, from the characteristic
carrier recombination time, through the quasi-steady-state soliton, to
the screening soliton. Three different build up regimes are evidenced
and their domain of existence are computed. The transient quasi-stead
y-state soliton is shown to be characterized by two constants: its nor
malized width and its normalized build up time response multiplied by
its peak intensity over dark irradiance. This latter assertion allows
us to predict the photorefractive soliton response time for various op
tical powers. It is thus compared to existing experimental results. (C
) 1998 Elsevier Science B.V.