Accession Number : ADA294168

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

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Krushelnick, K. M. ; Ting, A. ; Burris, H. R. ; Fisher, A. ; Manka, C.

PDF Url : ADA294168

Report Date : 02 MAY 1995

Pagination or Media Count : 15

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.

Descriptors :   *LIGHT SCATTERING, *SECOND HARMONIC GENERATION, *LASER BEAMS, *RAMAN SPECTRA, *LASER TARGET INTERACTIONS, STIMULATION(GENERAL), PLASMAS(PHYSICS), BACKSCATTERING, NONLINEAR OPTICS, IONIZATION, HIGH INTENSITY.

Subject Categories : Optics
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE