论文标题
准阶段匹配的光子晶体中的涡流孤子
Vortex solitons in quasi-phase-matched photonic crystals
论文作者
论文摘要
我们在三维准阶段匹配的光子晶体中报告了稳定化合物孤子的解决方案，该溶液具有二次（$χ^{（2）} $）的非线性。光子晶体是带有棋盘板结构的，可以通过可用技术实现。孤子是由两种类型的四峰涡流模式建造的，分别是菱形和正方形（分别以室内和现场为中心的自我捕获状态）。它们的稳定性区域在系统的参数空间中被鉴定出来（菱形占据了基本更广泛的稳定性域），而所有明亮的涡旋词素在均匀的$χ^{（2）} $介质中都遭受强方差不稳定性。概述了实现孤子实现实验的可能性。
We report solutions for stable compound solitons in a three-dimensional quasi-phase-matched photonic crystal with the quadratic ($χ^{(2)}$) nonlinearity. The photonic crystal is introduced with a checkerboard structure, which can be realized by means of the available technology. The solitons are built as four-peak vortex modes of two types, rhombuses and squares (intersite- and onsite-centered self-trapped states, respectively). Their stability areas are identified in the system's parametric space (rhombuses occupy an essentially broader stability domain), while all bright vortex solitons are subject to strong azimuthal instability in uniform $χ^{(2)}$ media. Possibilities for experimental realization of the solitons are outlined.
