Karmakar Subhajit, Kumar Deepak, Varshney Ravendra K, Roy Chowdhury Dibakar
Opt Lett. 2020 Jul 1;45(13):3386-3389. doi: 10.1364/OL.393702.
We explore an inherent connection between two fundamental concepts of physics-resonance (eigen mode) hybridization and lattice effect in sub-wavelength periodic structures. Our study reveals that coupling with lattice mode is the prime deciding factor to determine the nature, position, and line shape of the hybridized states. Modulating lattice modes can effectively control mode hybridization and tune the relative position of hybridized modes [symmetric (electric), anti-symmetric (magnetic)] without changing any other structural dimensions in subwavelength plasmonic metamaterials. Outcomes of this study can be exploited in designing linear and nonlinear photonic structures toward futuristic meta devices.
我们探究了物理学中两个基本概念——亚波长周期结构中的共振（本征模式）杂化与晶格效应之间的内在联系。我们的研究表明，与晶格模式的耦合是决定杂化态的性质、位置和线形的主要因素。在亚波长等离子体超材料中，调制晶格模式可以有效地控制模式杂化，并调节杂化模式[对称（电）、反对称（磁）]的相对位置，而无需改变任何其他结构尺寸。这项研究的成果可用于设计面向未来元器件的线性和非线性光子结构。
