基于双光束耦合的双光子全息屏蔽光伏空间孤子

Two-photon holographic screening-photovoltaic solitons with two-wave mixing

证明了在双光束耦合外加偏压的双光子光伏光折变晶体中存在一种新的全息屏蔽光伏空间孤子。在信号光远小于抽运光的条件下得出了亮(暗)孤子的解析解。数值模拟了这种孤子在稳态条件下的演化特性。结果表明:在给定的参量情况下,在晶体中可形成稳定的双光子明(暗)全息屏蔽光伏空间孤子。

A new kind of two-photon holographic screening-photovoltaic solitons is proposed in biased photovoltaic-photorefractive materials based on two-wave mixing. The analytical solutions of bright （dark） solitons are obtained when the intensity of signal beams is smaller than that of pump beams. The dynamical evolutions of such solitons are simulated numerically under steady-state conditions. The result shows that the steady-state bright （dark） two-photon holographic screening-photovoltaic spatial solitons are possible in the crystal with given parameters .