Reduction of Three-Halves Harmonic Emission from Laser-Produced Plasmas with Broadwidth Induced Spatial Incoherence at 0.53 micrometers

Abstract

Measurements of the omega sub 0/2 emission from Laser irradiated targets at 0.53 microns were made at three angles over a wide range of Laser bandwidths with and without induced spatial incoherence (ISI) echelons. THe 3 microns/2 emission was found to be correlated with hard x rays but not Raman spectra suggesting that the 3 omega sub 0/2 radiation was due to two plasmon decay. Reduction of both 3 omega sub 0/2 emission and the accompanying hard x rays by ISI required five to ten times Larger bandwidths than needed to suppress stimulated Raman scattering and stimulated Brilloin scattering.

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Document Details

Document Type
Technical Report
Publication Date
May 24, 1991
Accession Number
ADA235798

Entities

People

  • C. K. Manka
  • K. J. Kearney
  • Stephen P.P. Obenschain
  • T. A. Peyser

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bandwidth
  • Charged Particles
  • Detectors
  • Electromagnetic Radiation
  • Electromagnetic Scattering
  • Electrons
  • Emission
  • Frequency
  • Hard X Rays
  • Measurement
  • Parametric Instability
  • Plasmons
  • Radiation
  • Raman Scattering
  • Scattering
  • Spectra
  • X Rays

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers