双色光光伏空间孤子的形成条件及其应用

以折射率改变为正的光伏晶体为例，讨论在其中形成双色光光伏空间孤子的条件-一般而言，在满足上述条件的情况下，双色光可以形成双色光亮孤子、双色光暗孤子、一亮一暗孤子-对于一个波长的光（ray2）单独不能形成亮孤子（它的Glass系数与背景光的Glass系数之比R2小于１）的情况，如果再加上一束另一个波长的光（ray1），且其Glass系数与背景光的Glass系数之比R1大于１，则在一定条件下，这个双色光中两个颜色的光可以都形成亮孤子-还讨论了ray1的光强对孤子宽度的影响-关键词：双色光光伏空间孤子全光开关

The condition for forming a polychromatic light photovoltaic spatial soliton and its application

We discuss the conditions under which some polychromatic light photovoltaic spatial solitons can be formed in a photorefractive crystal with a positive perturbation refractive index- Generally, under these conditions we can form bright-bright,dark-dark and bright-dark polychromatic light photovoltaic spatial solitons in the crystal- In the case of bright-bright solitons, if we launch a monochromatic beam(ray2,its effective Glass constant is less than that of the background), bright soliton cannot be obtained- But if we add another monochromatic beam(ray1, its effective Glass constant is larger than that of the background beam), both ray1 and ray2 can form bright solitons under some condition- This gives a new way to control ray2 with ray1- It is shown that the width of bright-bright solitons can be modified by the peak intensity of ray1-