Plasmonic modes at the planar interface between Ag and chiral sculptured MgF2 thin film

The modified Kretschmann configuration theroretically was used to excite surface plasmon-polariton wave at the planar interface of a silver and chiral sculptured magnesium fluoride thin film. Plasmonic modes were calculated in absorbance spectra as a function of incident angle. The results showed that there exist multiple plasmonic modes for P- polarization, while did not appear surface plasmon-polariton mode for S-polarized incidence.