从理论上研究了开路情况下一维光伏空间孤子的时间演化过程。采用数值方法,通过研究有无背景光辐照下光伏空间亮(暗)孤子的含时空间电荷场,分别得到了光伏空间亮(暗)孤子的孤子波形强度微分方程。在此基础上研究了开路情况下通过增加均匀背景光辐照强度对光伏空间孤子及其半峰全宽的影响。结果显示,通过增加均匀背景光辐照强度,光伏空间孤子随时间的演化过程比没有均匀背景光时加快的倍数为均匀背景光强与暗辐照光强之比。光伏空间孤子的半峰全宽达到稳态所需的时间随孤子峰值强度和暗辐照与均匀背景光强度之和的比值的增大而变短。

The time-dependent formation of one-dimensional (1D) photovoltaic solitons under open-circuit conditions are researched theoretically. The differential equations of profile of bright and dark photovoltaic solitons are obtained by the numerical method. The effects of the background light on the photovoltaic solitons and their width full-width at half maximum (FWHM) are studied. The results show that applying the background light results in shorting the formation time of photovoltaic solitons, and the ratio of formation time without the background light to that with the background light quals the ratio of the intensity of background light to that of dark irradiation. The higher the ratio of soliton peak intensity to the sum of background light and dark irradiation intensity, the shorter the time of the FWHM of photovoltaic soliton reacheing steady-state.