Recording of phase fluctuations of stimulated scattered light
Vasil'ev M.V. , Gyulameryan A.L. , Mamaev A.V. , Ragul'skii V.V., Semenov P.M. , Sidorovich V.G.
The phase fluctuations were recorded experimentally and the spectral line width of the Stokes wave produced as a result of stimulated MandePshtam-Brillouin scattering (SMBS) was measured for the first time. A method of heterodyning the light of two mutually incoherent SMBS Stokes waves excited by neodymium laser radiation in optically isolated liquids, was used to do this. The oscillations of the current from the photodetector illuminated by these waves was recorded with a high-speed oscilloscope. The spectral line width of the stimulated scattered light in carbon tetrachloride was determined from the average time of the oscillations.