Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1518052 | Journal of Physics and Chemistry of Solids | 2007 | 9 Pages |
Abstract
Complex spectroscopic studies of (Ce,Gd)Sc3(BO3)4:Cr3+ (CSB:Cr3+) crystals (crystal growth, absorption and luminescence spectroscopy, crystal field calculations, analysis of the radiative and non-radiative decays) are presented. The main results of the paper include calculations of crystal field parameters and energy level scheme for Cr3+ at distorted octahedral Sc3+ sites, evaluation of the Huang-Rhys factor, effective phonon frequency, zero-phonon line energy, and parameters of radiative and non-radiative decays. Comparison with experimental results and other literature data is discussed. A very unusual value of the frequency factor (related to the non-radiative processes) is explained as being due to heterodesmic nature of chemical bonds in the CSB crystal. Cr3+-doped CSB crystals (with Cr3+ concentration 5.1Ã1019Â cmâ3 or 1%) are suggested as promising candidates for potential applications as active media for solid state lasers.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
M.G. Brik, V.A. Lebedev, E.V. Stroganova,