Study of surface plasmon polarization conversion with Au surface-relief gratings

Abstract

The effect of polarization conversion (PC) caused by excitation of surface plasmons on metal gratings was studied in many theoretical and experimental works. However, these studies mainly concerned the samples with spatial period (d) greater than the excitation wavelength (λ). Here we report the results of experimental studies of plasmon-stimulated PC for Au gratings with different d/λ ratios and different relief depth (h).