非相干耦合屏蔽光伏孤子对

预言了在有外加电场的光伏光折变晶体中存在着稳态非相干耦合的屏蔽光伏空间孤子对.这种孤子对是由偏振态和波长都相同的两束互不相干光耦合而成的.它可被看成是非相干屏蔽孤子对和非相干光伏孤子对的统一形式，当外加电场很强可忽略光伏效应时，它类似于已报 道的屏蔽孤子对，而当外加电场为零时，它相当于闭路条件下的光伏孤子对. 关键词： 光折变效应 空间光孤子 光伏效应

INCOHERENTLY COUPLED SCREENING-PHOTOVOLTAIC SOLITON PAIRS

It is predicted in this paper that incoherently coupled screening-photovoltaic s oliton pairs are possible in biased photovoltaic-photorefractive crystals under steady-state conditions.These soliton pairs are established by the solitary beam s which have the same polarization,wavelength,and are mutually incoherent.The sc reening-photovoltaic soliton pairs can be considered as the united form of scree ning soliton pairs and closed-circuit photovoltaic soliton pairs.They reduce to screening soliton pairs in the absence of photovoltaic effect,whereas they becom e photovoltaic soliton pairs under the closed-circuit condition when the bias fi eld is not applied.