高斯波与明孤波的匹配及其演化

The match of a Gaussian wave with one bright soliton and their solitary evolution

通过解析和数值计算方法研究了高斯波与加外电场的光伏光折变晶体中的空间屏蔽光伏明孤波的匹配条件.结果表明,通过单点匹配方法即可实现高斯波与明孤波的良好匹配,多点匹配能显著改善高斯波与明孤波的匹配程度,匹配的高斯波能够很快演化成稳定的空间明孤波.同时研究了失配情况下高斯波的动态演化,表明在强失配情况下,入射波最终发散.

We present the conditions for how a Gaussian wave matches the screening-photovoltaic sptial optical soliton in a biased photovoltaic-photorefractive crystal by means of analytical and numerical methods. The results show that the one point matched technique can achieve finer match of a Gaussian wave with a certain bright spatial optical soliton. The excessive-point match technique can clearly improve the matching extent. A matched Gaussian wave can rapidly evolve to a steady-state bright spatial optical soliton. Under strong mismatch conditions, the incident wave will finally diverge.