外加电场双光子光伏光折变晶体中的空间孤子

Spatial solitons in biased two-photon photovoltaic photorefractive media

证明在外加电场的双光子光伏光折变晶体中存在明、暗稳态空间孤子波,它源于双光子光折变效应。结果表明:当光伏效应可以忽略时,这种孤子类似于双光子屏蔽孤子;当没有外加电场时,它退化成闭路条件下的双光子光伏孤子,在不同条件下屏蔽孤子和光伏孤子理论都可以从这一理论中得到。

Steady-state bright （dark） spatial solitons are predicted for biased two-photon photovoltaic photorefractive media, which are due to two-photon photorefractive effect. When the photovoltaic effect is neglectable, these solitons are just like the two-photon screening solitons. If the applied field absent, these solitons degenerate to the two-photon photovoltaic solitons under the close-circuit condition. Screening solitons and photovoltaic solitons theories can be obtained by simplifying this theory under the appropriate conditions.