Stimulated Brillouin shifts observed at 2.1 degrees K in quartz are the same as those observed at 293 degrees K. No extreme nonlinear behavior is observed. Recent anomalous results reported by Russian workers are shown to be due to the very strong stimulated Raman scattering that sets in at low temperatures.
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http://dx.doi.org/10.1126/science.154.3754.1319 | DOI Listing |
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