Abstract
For the first time to our knowledge, a number of Stokes and anti-Stokes lines with a shift in magnitude corresponding to stimulated Mandelstam—Brillouin scattering (SBS) lines in water are recorded in the SBS spectrum excited by nanosecond laser pulse focusing “under the free water surface.” In our opinion, this spectrum is caused by the nonlinear interaction of waves in the external cavity formed by a distributed mirror and the water surface.
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Funding
This work was supported in part by the Russian Foundation for Basic Research, projects nos. 18-52-16016, 19-02-00013, 20-02-00172.
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Translated by A. Kazantsev
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Bunkin, A.F., Davydov, M.A., Pershin, S.M. et al. On the Nature of Processes Excited by Nanosecond Laser Pulses near the Water Surface. Bull. Lebedev Phys. Inst. 47, 313–316 (2020). https://doi.org/10.3103/S1068335620100048
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DOI: https://doi.org/10.3103/S1068335620100048