Abstract
Excitation of surface plasmon–polariton (SPP) waves guided by the planar interface of a metal and an isotropic chiral material was investigated in the prism-coupled configurations. The characteristics of the SPP waves in both the Turbadar–Kretschmann–Raether configuration and the Turbadar–Otto configuration were studied. The results for SPP-wave excitation in the latter configuration were easily discernible than the former. The associated canonical boundary-value problem was numerically solved for the confirmation of the results of the prism-coupled configurations. It was seen that the SPP waves can exist only if the chirality pseudo-scalar has magnitude that is less than a threshold value.
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Acknowledgements
The authors thank Dr. Tom G. Mackay, University of Edinburgh, for his discussions of SPP waves guided by chiral materials. The authors also thank HEC for partial support of this research through research Grant NRPU 2016-5905.
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Naheed, M., Faryad, M. Excitation of surface plasmon–polariton waves at the interface of a metal and an isotropic chiral material in the prism-coupled configurations. Eur. Phys. J. Plus 135, 724 (2020). https://doi.org/10.1140/epjp/s13360-020-00757-2
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DOI: https://doi.org/10.1140/epjp/s13360-020-00757-2