Surface and magnetic polaritons on two-dimensional nanoslab-aligned multilayer structure

• DOI: 10.1364/oe.19.016375
• Publication Date: 2011-08-10T18:18:27Z
• Authors: Zhijian Zhang; Keunhan Park; Bong Jae Lee
• Keywords: Opacity; Nanophotonics

The present study theoretically investigates the radiative properties of a two-dimensional (2-D) multilayer structure that has dielectric spacer between metallic substrate and square cross-sectional gratings. Differently from one-dimensional strips coated on atop an opaque film [Opt. Express 16, 11328 (2008)], 2-D gratings can support localized surface plasmon in addition to propagating along metal-dielectric interface. Moreover, presence also allows excitation magnetic polaritons. Underlying mechanisms polartions proposed are elucidated by employing rigorous coupled-wave analysis. results obtained this will advance our fundamental understanding light-matter interaction at nanometer scale facilitate development engineered nanostructures for real-world applications, such as thermophotovoltaic photovoltaic devices.