Characteristics of plasmonic at a metal /chiral sculptured thin film interface

TL;DR

This paper theoretically investigates surface plasmon polaritons at a metal/chiral sculptured thin film interface, analyzing how structural parameters and polarization affect plasmon peaks and optical absorption.

Contribution

It introduces a transfer matrix method analysis of plasmonic behavior at a novel metal/chiral thin film interface, highlighting polarization-dependent plasmon peaks.

Findings

Multiple plasmon peaks for P-polarization

Weak plasmon peaks for S-polarization

Optical absorption varies with incident angle and structural parameters

Abstract

The propagation of surface plasmon polariton at an interface of metallic thin film and chiral sculptured thin film theoretically has been investigated using the transfer matrix method in the Kretschman configuration. The optical absorption of structure as a function of polar incident angle for linear polarization P and S has been calculated at different structural parameters. The results show that exist multiple plasmon peaks for P-polarization, while there are the weak plasmon peaks when incident of light is S- polarized plane wave.