Laser excitation of surface plasma waves over a diffuse plasma boundary

Abstract

The dispersion relation for surface plasma waves (SPWs) over a diffuse plasma layer is investigated in this paper. The layer is modeled by a stepwise profile. The phase velocity of an SPW increases sharply at larger layer thicknesses as well as at higher values of plasma density. The SPW can be resonantly excited by a laser when the upper layer has a surface ripple with a wave number comparable to the wave number of the SPW.

Dispersion relation of surface magneto-plasmons

“…The surface waves resulting from two different directions of the static magnetic field, normal to the interface and parallel to the direction of wave propagation, have the same frequency, provided the strength of the magnetic field is the same. The dispersion relation for surface plasma waves over diffuse plasma layer [9], and curved metal dielectric interface [10] are studied. Also, Davoyan et al [11] studied the dispersion relation of nonlinear plasmonic modes in a metal-dielectric slot waveguide and found that the antisymmetric mode may split into two brunches giving birth to two families of nonlinear antisymmetric modes.…”