Extreme Broadening of Stimulated Raman Scattered Light from High Intensity Laser Plasma Interactions.

Abstract

High intensity picosecond laser plasma interaction experiments were performed to examine nonlinear scattering mechanisms in field ionized underdense plasmas. Broad and oscillatory spectra were observed for the forward scattered light. The Raman backscattered spectrum showed an extremely broad, supercontinuum like nature, extending from 450 nm to greater than 1200 nm at incident laser intensities of 2 X 10(exp 18) W/sq cm. Narrow and large amplitude modulations in the spectrum of the backscattered radiation were measured and are attributed to scattering from ion waves.

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Document Details

Document Type
Technical Report
Publication Date
May 02, 1995
Accession Number
ADA294165

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

  • Amplitude
  • Diffraction
  • Electron Density
  • Electrons
  • Frequency
  • Frequency Shift
  • Intensity
  • Laser Pulses
  • Lasers
  • Measurement
  • Military Research
  • Modulation
  • Plasma Waves
  • Radiation
  • Raman Scattering
  • Scattering
  • Spectra

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Optical Physics and Photonics.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers