Anomalous light scattering on polaritons in the region of phase transition in α-LiJO3 single-crystals |
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| Authors: | SI Marennikov VA Orlov YuN Fomin BI Kidyarov |
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| Institution: | Institute of Semiconductor Physics, Siberian Branch of the USSR Academy of Sciences, Novosibirsk 90, USSR |
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| Abstract: | The experimental investigation of the temperature dependence of spectra of spontaneous Raman light scattering on polaritons in α-LiJO3 crystal has been carried out. An anomalous broadening of the frequency-angular spectrum of scattered radiation was found in the region of phase transition α→γ→β at 256°C. It is assumed that this phenomenon is due to an anomalous increase of non-linearity of the third order and, hence, of the probability of the four-particle scattering process at which a pumping photon is decayed into a photon and two polaritons during a common act. |
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