Infrared dispersion of dielectric function in Mg-doped LiNbO3 crystals with polaronic-type conductivityстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:We have measured the refractive indices of Mg: LiNbO3 crystals before and after chemical reduction at different annealing temperatures by the spontaneous parametric down-conversion technique and near-forward Raman scattering by polaritons in the range 2-11 mu m. The polaron-induced contribution to the dispersion of the real part of the dielectric function was revealed near the phonon absorption edge. It was found that this contribution increases considerably with increase in the polaron concentration. Copyright (C) 2007 John Wiley & Sons, Ltd.