%0 Journal Article
%A Martínez Matos, Óscar
%A Torchia, Gustavo Adrián
%A Vaveliuk, Pablo
%A Tocho, Jorge Omar
%T Electron-lattice coupling in congruent Co-doped LiNbO_3 : Cr^3^+: ZnO crystal
%D 2001
%@ 0953-8984
%U https://hdl.handle.net/20.500.14352/59024
%X The importance of the role of the ion-lattice coupling in determining the energy levels of Cr^3^+ ions in congruent LiNbO_3 crystals doped with 2.9% of ZnO is demonstrated in this paper. The Racah parameters: B = 533 cm^-1, C = 3244 cm^-1 and the crystal-field intensity Dq = 1527 cm^-1 were determined and the Tanabe-Sugano diagram was constructed. The characteristics of the absorption and the emission spectra of Cr^3^+ ions in these crystals can be explained in terms of the configurational-coordinate diagram in the harmonic approximation, with good agreement obtained. The Huang-Rhys parameter S = 6.86 and the lattice phonon energy hbarω = 343 cm^-1 are also reported in this work.
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