Simple analytical model to use in CAD tools for designing FSS devices: plasmonic transmission through hole arrays in thin films

• Published in: Applied physics. B, Lasers and optics Vol. 129; no. 1
• Main Authors: Ali, Nouran M., Ali, Tamer A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2023; Springer Nature B.V
• Subjects: Applied physics; Arrays; Engineering; Film thickness; Hole size; Lasers; Mathematical models; Optical Devices; Optical properties; Optics; Photonics; Physical Chemistry; Physics; Physics and Astronomy; Plasmonics; Quantum Optics; Thin films
• ISSN: 0946-2171; 1432-0649
• DOI: 10.1007/s00340-022-07959-9

Modeling of nano-structured plasmonic surfaces in optical range has attracted great attention in recent research for its various optical properties such as filtering and enhanced transmission of light. In this paper, we present a simple nanocircuit model that can be integrated in CAD tools to design filters and perfect absorbers FSS devices that are based on plasmonic transmission through thin films structured by hole arrays. To illustrate the model potential, we applied it for both circular and square hole arrays on a silver thin film. The model is demonstrated for different structure parameters (hole size and film thickness) in optical frequencies. We show that the model results compare to the numerical calculations obtained from COMSOL Multiphysics software with acceptable deviation and that the model achieves good matching with previously reported experimental measurements.