We report the results of theoretical modelling of photonic nanojets (PNJs) formed by laser radiation scattering on a single-layer ordered assembly of dielectric microtoroids placed on the surface of a transparent matrix (silicone film). Using the method of computational electrodynamics (FDTD), the main PNJ parameters (length, width, peak intensity) are analysed under the conditions of mutual influence of the light fields of neighbouring microparticles. It is shown that the main factor affecting the PNJ characteristics under study is the spatial configuration of the radiation-scattering particle, namely, the internal diameter of its cross section. It is found that for certain configurations of toroid placement in a cluster, a PNJ ensemble is implemented with parameters significantly better than those for a single toroid.

中文翻译：

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介电微环基质形成光子纳米射流的特殊性

我们报告的理论模型的光子纳米射流（PNJs）的理论建模结果由激光辐射散射放在放置在透明基质（有机硅膜）表面的介电微环的单层有序组件上。使用计算电动力学方法（FDTD），在相邻微粒的光场相互影响的条件下分析了主要的PNJ参数（长度，宽度，峰强度）。结果表明，影响所研究的PNJ特性的主要因素是辐射散射粒子的空间构型，即其横截面的内径。已经发现，对于集群中环形放置的某些配置，实现的PNJ集成的参数明显优于单个环形的参数。