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Optical studies of Eu3+ ions doped in tellurite glass
Akshaya Kumar1, D K Rai, S B Rai
1Department of Physics, Banaras Hindu University, Varanasi, India.
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
|September 6, 2002
Abstract:
Absorption and fluorescence spectra of Eu3+ ions doped in a tellurite glass have been recorded and analysed. Judd-Ofelt analysis has been done in order to calculate the different optical parameters such as oscillator strength, Judd-Ofelt intensity parameters, stimulated emission cross-section, transition probability, branching ratio, radiative lifetime, etc. Lifetime measurements of the 5D0 level as a function of Eu3+ concentration have been used to explore the concentration quenching process. The mechanism of quenching is found to be of a dipole-dipole type.