Spectroscopic Properties of Trivalent Chromium Ion in Lithium Niobate Crystals

摘要

The formulas of crystal field theory are derived for a particular case of the C_(3V) symmetry group. Convenient and numerically simple methods are proposed to take into account the polarization of the local environment of the Cr~(3+) impurity ion in LiNbO_(3). The parameters of intraion interactions for Cr~(3+) in lithium and niobium positions in the lithium niobate lattice and the distortion of the niobium octahedron in lithium niobate, which is caused by the incorporation of trivalent chromium ion, are determined.