BUILD UP MECHANISMS OF (1-DIMENSIONAL PHOTOREFRACTIVE BRIGHT SPATIAL QUASI-STEADY-STATE AND SCREENING SOLITONS(1))

Citation
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
Citations number
29
Categorie Soggetti
Optics
Journal title
ISSN journal
00304018
Volume
145
Issue
1-6
Year of publication
1998
Pages
393 - 400
Database
ISI
SICI code
0030-4018(1998)145:1-6<393:BUMO(P>2.0.ZU;2-S
Abstract
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.