Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5404109 | Journal of Luminescence | 2007 | 15 Pages |
Abstract
The spectroscopic characteristics of translucent oxysulfide optical ceramics doped by Nd3+, which can be perspective for 1-μm lasing with high quantum efficiency is considered. Analysis of multiphonon relaxation (MR) rate of the low 4I11/2 laser level in the ceramics is provided using nonlinear theory of MR for multifrequency model of lattice vibration. MR rate dependence for the transitions with equal number of phonons p=4 on the extent of the phonon spectrum and Nd3+ to the nearest ligands distance R0 is established experimentally and analyzed. For the initial 4F3/2 laser level in the Gd2O2S:Nd3+ and La2O2S:Nd3+ ceramic samples an analysis of the energy transfer kinetics is provided. Different stages of energy transfer-direct energy transfer and a stationary migration-controlled stage are observed and analyzed. Dipole-dipole mechanism of energy transfer is established and microparameters of energy transfer and migration are determined.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Yu.V. Orlovskii, T.T. Basiev, K.K. Pukhov, M.V. Polyachenkova, P.P. Fedorov, O.K. Alimov, E.I. Gorokhova, V.A. Demidenko, O.A. Khristich, R.M. Zakalyukin,