Transmission properties of one dimensional metal and left-handed gratings
Gergely Kajtar, Peter Markos
TL;DR
This paper uses rigorous numerical methods to analyze how metallic and metamaterial gratings transmit light, focusing on plasmonic resonances that enhance transmission through wave coupling.
Contribution
It provides a detailed numerical analysis of transmission spectra in 1D gratings, identifying key plasmonic mechanisms responsible for resonance-enhanced transmission.
Findings
Identification of lengthwise and crosswise plasmonic modes
Resonance enhancement linked to wave coupling mechanisms
Numerical validation of transmission spectra
Abstract
We provide rigorous numerical calculations (using the rigorous coupled-wave analysis) of transmission spectra of various metallic and metamaterial one-dimensional gratings and identify plasmonic resonances responsible for enhanced transmission. We argue that the most important mechanism which influences the resonant transmission is the coupling of incident electromagnetic wave with two plasmonic waves: lengthwise plasmons, which propagates along the grating, and crosswise plasmons excited in air gaps.
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