Accession Number : AD0684880

Title :   STIMULATED SCATTERING IN LIQUIDS AND GASES.

Descriptive Note : Technical rept. 1 Jan 67-28 Feb 69,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF PHYSICS

Personal Author(s) : Rank,D. H. ; Wiggins,T. A. ; Dietz,D. R. ; Foltz,N. D. ; Cho,C. W.

Report Date : 28 FEB 1969

Pagination or Media Count : 78

Abstract : A series of six papers on stimulated scattering is presented. A summary of the work on stimulated Rayleigh scattering in liquids is included. Polarization conditions are discussed and orientational relaxation times are determined. The existence of stimulated thermal Rayleigh scattering in gases and liquids has been observed. The threshold, critical absorption coefficient needed to suppress the stimulated Brillouin scattering, and the predicted anti-Stokes shift have been observed. The density dependence of the threshold has been investigated for CH4 and CO2. The time for thermalization of excited molecules when reduced to one atmosphere has been determined to be on the order of 0.1 microseconds. (Author)

Descriptors :   (*LASERS, *LIGHT TRANSMISSION), SCATTERING, RELAXATION TIME, CARBON DIOXIDE, METHANE, POLARIZATION, NONLINEAR SYSTEMS, LIQUIDS, GASES

Subject Categories : Lasers and Masers
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE