论文标题
在两个等离子晶格的堆栈中厚度无关的窄共振
Thickness-independent narrow resonance in a stack of two plasmonic lattices
论文作者
论文摘要
在均匀环境中由纳米颗粒组成的等离子体晶格以其对所谓晶格等离子共振的支持而闻名。它们与沿结构的自由传播光子相互耦合的局部表面质子相关。在本文中，在两个相同的等离子晶格的堆栈中的Wexplore模式。我们证明了这种结构能够支持严格位于瑞利异常上的模式，并且不会随着两个晶格之间的距离变化而移动。鉴于周期是实验中最明显地再现数量的事实，因此可以使用这种行为来简化在所需能量下共振的结构的制造。
Plasmonic lattices consisting of nanoparticles in a homogeneous environment are well known fortheir support of so-called lattice plasmon resonances. They are associated with localized surfaceplasmons coupled to each other via free propagating photons along the structure. In this paper, weexplore modes in a stack of two identical plasmonic lattices. We demonstrate that such a structureis able to support a mode that is positioned strictly on a Rayleigh anomaly and does not shift withthe variation of distance between two lattices in wide limits. Given the fact that period is the moststably reproduced quantity in an experiment, such behavior can be used to simplify the fabricationof structures with resonances at desired energies.
