Abstract

The influence of surface corrugations of a metal air boundary on the surface plasma oscilations (SPO) has been widely studied (refs. 1-4). Some conclusions are, a shift of the phase velocity towards smaller values and an increase of the damping of the SPO with increasing roughness. The quantification of this dependence has been carried out experimentally in several laboratories, mainly by the use of ATR techniques. Photoacoustic spectroscopy is an alternative technique that has been succesfully used and has shown to be more more general and as sensitive as ATR.

© 1988 Optical Society of America