title: Effect of finite metallic grating size on Rayleigh anomaly-surface plasmon polariton resonances.
abstract: Rayleigh anomalies (RAs) and surface plasmon polaritons (SPPs) on subwavelength metallic gratings play pivotal roles in many interesting phenomena such as extraordinary optical transmission. In this work, we present a theoretical analysis of the effect of finite metallic grating size on RA-SPP resonances based on the combination of rigorous coupled wave analysis and finite aperture diffraction. One-dimensional arrays of gold subwavelength gratings with different device sizes were fabricated and the optical transmission spectra were measured. As the grating size shrinks, the broadening of the RA-SPP resonances is predicted by the theoretical model. For the first order RA-SPP resonances, the results from this model are in good agreement with the spectra measured from the fabricated plasmonic gratings.
authors.forename: Fanghui
authors.initials: F
authors.lastname: Ren
authors.forename: Kyoung-Youm
authors.initials: KY
authors.lastname: Kim
authors.forename: Xinyuan
authors.initials: X
authors.lastname: Chong
authors.forename: Alan X
authors.initials: AX
authors.lastname: Wang
mesh_terms: D016477:Artifacts; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008670:Metals; D008904:Miniaturization; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation* / Q000379:methods
chemical_list: D008670:Metals