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Title: Raman parametric excitation effect upon the third harmonic generation by a metallic nanoparticle lattice

This work is a theoretical study on third harmonic generation in the nonlinear propagation of an intense laser pulse through a periodic three-dimensional lattice of nanoparticles. Using a perturbative method, the nonlinear equations that describe the laser–nanoparticle interaction in the weakly relativistic regime are derived. Additionally, the nonlinear dispersion relation and the amplitude of the third harmonic are obtained. Finally, the effects of the nanoparticle radius and separation length, the distribution of the nanoparticle electron density, and the laser frequency upon the third harmonic efficiency are investigated. In addition to the expected resonance that occurs when the third harmonic resonates with the plasmon wave, another resonance appears when the nonlinear interaction of the fundamental mode with the third harmonic excites a longitudinal collective plasmon wave via the parametric Raman mechanism.
Authors:
 [1]
  1. Department of Physics, University of Mohaghegh Ardabili, PO Box 179, Ardabil (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22494756
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DISPERSION RELATIONS; EFFICIENCY; ELECTRON DENSITY; EXCITATION; HARMONIC GENERATION; INTERACTIONS; LASER RADIATION; NANOPARTICLES; NONLINEAR PROBLEMS; PULSES; RAMAN EFFECT; RELATIVISTIC RANGE; RESONANCE; THREE-DIMENSIONAL LATTICES