Screening-photovoltaic spatial solitons illuminated by e-polarized incoherent uniform background irradiation with a divider resistance

In order to obtain a divider resistance and e-polarized incoherent uniform background irradiation effect on the screening-photovoltaic spatial solitons,a universal spatial soliton theory in photovoltaic photorefractive crystals illuminated by e-polarized incoherent uniform background irradiation with a divider resistance was put forward.The effect of a divider resistance and e-polarized incoherent uniform background irradiation on the full width of half maximum(FWHM) of solitons were simulated.The numerical results show that the FWHM of the solitons decreases with increasing of divider coefficient.The background irradiation has a paltry influence on the solitons when the ratio of the intensity of the e-polarized background irradiation to dark irradiance is small.The FWHM of solitons increases with increasing of the intensity of background irradiation when the ratio is bigger.All kinds of the spatial soliton can be obtained from this theory by adjusting the value of the divider resistance,e-polarized background irradiation,the biased electric field and photovoltaic electric field.