Electron vibrational suppression of magnetic-dipole electronic transitions in MeF2:Tm2+ crystals

I. V. Ignatev; V. V. Ovsyankin

doi:10.1117/12.229138

3 January 1996 Electron vibrational suppression of magnetic-dipole electronic transitions in MeF₂:Tm2+ crystals

I. V. Ignatev, V. V. Ovsyankin

Proceedings Volume 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions; (1996) https://doi.org/10.1117/12.229138
Event: Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare Earth and Transitional Ions, 1995, St. Petersburg, Russian Federation

Abstract

Electronic transitions between the Stark components of ²F_7/2 and ²F_5/2 terms in 4f¹³ configuration are observed in the CaF₂:Tm²⁺ and CaF₂:Tm²⁺ absorption and luminescence spectra. The transitions are magnetic-dipole. Theoretical analysis in LSJ representation allows us to determine the relation between electronic transition probabilities. Experimental relations between observed transition probabilities are estimated using vibronic sideband integral intensity of the (Gamma) ₇ $ARLR (Gamma) ₇' transition for normalization. The theoretical results vary from the experimental ones. Analysis of the possible reasons for the discrepancy has been performed. Suppression of the (Gamma) ₇ $ARLR (Gamma) ₇ transition is associated with the resonant reabsorption of radiation. Suppression of (Gamma) ₇ yields (Gamma) ₈' transition in absorption is caused by intensity transfer to vibronic transitions due to the interaction of Tm²⁺ ions with the even (Gamma) _3g and (Gamma) _5g vibrations. The degree of this suppression was evaluated in the framework of electrostatic approximation. Results of the calculation are in agreement with the experimental ones.

Citation Download Citation

I. V. Ignatev and V. V. Ovsyankin "Electron vibrational suppression of magnetic-dipole electronic transitions in MeF₂:Tm2+ crystals", Proc. SPIE 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions, (3 January 1996); https://doi.org/10.1117/12.229138

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