Title: Probing of a surface plasma wave by an obliquely incident laser on the metal surface
Abstract: A surface plasma wave (SPW) of frequency ω1 and wave number k1 propagating along a metal-free space boundary exerts a ponderomotive force on the free electrons, creating an electron density perturbation at frequency 2ω1. When a laser of frequency ω2 and wave number k2 is incident at a suitable angle on the metal surface, it gives rise to the oscillatory velocity of electrons at frequency ω2. This oscillatory velocity couples with the density perturbation to generate a nonlinear current at frequency 2ω1+ω2. The nonlinear current derives a radiating wave under suitable conditions. By measuring the amplitude of the radiating wave, the SPW field can be probed.
Publication Year: 2007
Publication Date: 2007-02-15
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 4
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