Probing of a surface plasma wave by an obliquely incident laser on the metal surface

Journal Article · Thu Feb 15 04:00:00 EST 2007 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2472281· OSTI ID:20982700

Singh, D B; Kumar, Gagan; Tripathi, V K ^[1]

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1. Laser Science and Technology Centre, Metcalfe House, Delhi-110054 (India)

A surface plasma wave (SPW) of frequency {omega}{sub 1} and wave number k{sub 1} propagating along a metal-free space boundary exerts a ponderomotive force on the free electrons, creating an electron density perturbation at frequency 2{omega}{sub 1}. When a laser of frequency {omega}{sub 2} and wave number k{sub 2} is incident at a suitable angle on the metal surface, it gives rise to the oscillatory velocity of electrons at frequency {omega}{sub 2}. This oscillatory velocity couples with the density perturbation to generate a nonlinear current at frequency 2{omega}{sub 1}+{omega}{sub 2}. The nonlinear current derives a radiating wave under suitable conditions. By measuring the amplitude of the radiating wave, the SPW field can be probed.0.

• OSTI ID: 20982700
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 4 Vol. 101; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRON DENSITY
ELECTRONS
LASERS
METALS
NONLINEAR PROBLEMS
PLASMA
PLASMA DENSITY
PLASMA WAVES
PONDEROMOTIVE FORCE
WALL EFFECTS