Phys. Rev. Lett. 32, 1038–1041 (1974)Brillouin Backscattering and Parametric Double Resonance in Laser-Produced PlasmaReceived 3 December 1973; published in the issue dated 13 May 1974 Brillouin backscattering from laser-produced plasmas of hydrogen and deuterium has shown an isotope effect in the red-side region of the generated second-harmonic light. This isotope shift is explained by the parametric instability at the cutoff region using the phase-matching condition of the waves. The decrease of the reflectivity appeared when the laser intensity increased up to 1 order of magnitude larger than the threshold of the parametric instability. A broad-band laser showed more effective heating of the plasma than a narrow-band laser. © 1974 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.32.1038
DOI:
10.1103/PhysRevLett.32.1038
PACS:
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