Surface Plasmon Polariton Excitation in Metallic Layer Via Surface Relief Gratings in Photoactive Polymer Studied by the Finite-Difference Time-Domain Method |
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Authors: | Pawel Karpinski Andrzej Miniewicz |
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Institution: | (1) Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wroclaw, Poland |
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Abstract: | We performed numerical investigations of surface plasmon excitation and propagation in structures made of a photochromic polymer
layer deposited over a metal surface using the finite-difference time-domain method. We investigated the process of light
coupling into surface plasmon polariton excitation using surface relief gratings formed on the top of a polymer layer and
compared it with the coupling via rectangular ridges grating made directly in the metal layer. We also performed preliminary
studies on the influence of refractive index change of photochromic polymer on surface plasmon polariton propagation conditions. |
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