Plasmon Resonance Changes in Thin Gold Film by Hydrogen Treatment

Abstract

The influence of hydrogen treatment of a 50 nm thick gold film deposited on a glass on properties of the film is studied. It was established that proton fluxes with a density higher than $8.68\square 10^{14} 1/(\mathrm{c}\mathrm{m}^{2}\square \mathrm{s})$ destroyed the film and changed it plasmonic properties. It was also found that the flow of protons to the surface of the gold film with a much smaller density of $8.68\square 10^{12}1/(\mathrm{c}\mathrm{m}^{2}\square \mathrm{s})$ significantly changes the optical properties. The resonance curve of the plasmon resonance shifts towards larger angles by 1.33° after hydrogen treatment. The amplitude of the resonant curve of the SPR does not change.