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Optics and AcousticsLasers and Masers

STIMULATED SCATTERING IN LIQUIDS AND GASES.

Authors: D. H. Rank; T. A. Wiggins; d. r. dietz; N. D. Foltz; C. W. Cho; PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF PHYSICS
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)

Description: Technical rept. 1 Jan 67-28 Feb 69
Pages: 78
Report Date: 28 FEB 1969
Contract Number: 12, Nonr65612
Report Number: 0088486

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Keywords relating to this report:
(*LASERS
*LIGHT TRANSMISSION)
*LIGHT TRANSMISSION_
_*LASERS
CARBON DIOXIDE
GASES
LIQUIDS
METHANE
NONLINEAR SYSTEMS
POLARIZATION
RELAXATION TIME
SCATTERING
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