Second Harmonic Generation of Stimulated Raman Scattered Light in Underdense Plasmas.

Abstract

Experiments examining nonlinear scattering mechanisms of high intensity (2 x 10(exp 18) W/sq cm) laser light in underdense plasmas were performed. Red-shifted second harmonic emission at 45 from the directly backscattered direction was observed from field ionized plasmas having electron densities ranging up to 10(exp 19) cu cm. This result was due to the doubling of stimulated Raman sidescattered light from the large plasma electron density gradients produced by ponderomotive cavitation.

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Document Details

Document Type
Technical Report
Publication Date
May 02, 1995
Accession Number
ADA294168

Entities

People

  • A. Fisher
  • Antonio Ting
  • C. Manka
  • H. R. Burris
  • K. M. Krushelnick

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Cavitation
  • Demographic Cohorts
  • Electric Fields
  • Electron Density
  • Electrons
  • Emission
  • Frequency
  • Hydrogen
  • Intensity
  • Ionization
  • Laser Pulses
  • Military Research
  • Radiation
  • Scattering
  • Second Harmonic Generation
  • Spectra
  • Spectroscopy

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics