STUDY OF OPTICAL-EXCITATION OF LONGITUDINAL-WAVES INSIDE A METAL SLAB

We calculate p-polarized light induced electric field inside a metalli c him on top of a dielectric substrate. A modified hydrodynamic model incorporating the bound electron contribution extracted from experimen tal data is used. The electric field inside an aluminum and a silver s lab is analysed especially with respect to the effect due to the prese nce of longitudinal waves. These results are applicable for calculatio ns of optical second-harmonic generation and photon-drag effect in thi n metallic layers.