Accession Number : AD0653210

Title :   CHARACTERISTICS OF THE STOKES EMISSION IN THE STIMULATED BRILLOUIN SCATTERING PROCESS,

Corporate Author : CORNELL UNIV ITHACA N Y SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s) : Tang,C. L.

Report Date : 30 OCT 1966

Pagination or Media Count : 61

Abstract : The characteristics of the Stokes emission in the stimulated Brillouin scattering of intense laser light in non-focusing media were studied in detail both theoretically and experimentally. Simple formulas that describe the various characteristics of the Stokes emission are obtained for the case when the attenuation length of the microwave phonons involved is much shorter than the interaction length and the distance over which the Stokes intensity in the medium changes appreciably due to the stimulated Brillouin process. This condition is generally fulfilled in most room-temperature experimental situations; these results can, therefore, be used as a convenient basis for interpreting the experimental results. Stimulated Brillouin scattering of collimated ruby laser beams in such non-focusing liquids as n-hexane, methanol, and carbon tetrachloride was investigated. It was found that the experimental data obtained is in very good agreement with the calculated results obtained on the basis of the simple steady state theory given. (Author)

Descriptors :   (*COHERENT RADIATION, *SCATTERING), (*PHONONS, EMISSIVITY), LINE SPECTRA, FREQUENCY, PHOTONS, PHOTOELASTICITY, ACOUSTICS, NOISE, LASERS, ALKANES, CARBINOLS, CARBON TETRACHLORIDE

Subject Categories : Lasers and Masers
      Acoustics
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE