Inhomogeneous broadening by point defects of RE3+ optical lines in YAG

L. Rogobete; Aurelia Lupei; Voicu Lupei; A. Petraru; B. Diaconescu

doi:10.1117/12.432827

29 June 2001 Inhomogeneous broadening by point defects of RE³⁺optical lines in YAG

L. Rogobete, Aurelia Lupei, Voicu Lupei, A. Petraru, B. Diaconescu

Proceedings Volume 4430, ROMOPTO 2000: Sixth Conference on Optics; (2001) https://doi.org/10.1117/12.432827
Event: ROMOPTO 2000: Sixth Conference on Optics, 2000, Bucharest, Romania

Abstract

Most of the RE³⁺ optical lines in YAG, at low temperature and concentrations, present two interesting features: a multisite structure and Lorenz lineshape of the inhomogeneous broadened lines. The satellite structure of RE³⁺ ions optical spectra in high temperature YAG present a group of P satellite lines of almost equal intensity that was assigned to nonstoichiometric occupation of Al³⁺ octahedral sites (a) by Y³⁺. Up to now, no reliable explanation of the anisotropic effects of Y³⁺(a) on RE³⁺ spectra was given. In this paper an attempt is made to explain the multisite structure and lineshapes in terms of the strain field (induced by point defects) theory. The model is illustrated for the absorption line ⁴I_15/2 implies ⁴S_3/2 of Er³⁺ (1.at.%) doped in YAG.

Citation Download Citation

L. Rogobete, Aurelia Lupei, Voicu Lupei, A. Petraru, and B. Diaconescu "Inhomogeneous broadening by point defects of RE³⁺optical lines in YAG", Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); https://doi.org/10.1117/12.432827

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