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Stark splitting and energy transfer between Dy3+-Ho3+ and between Tb3+-Er3+ in calcium-lithium borate glass

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Abstract

Fluorescence spectrum of Dy3+, Dy3+-Ho3+, Tb3+ and Tb3+-Er3+ doped in calibo glass have been studied using Ar+ and excimer lasers. Non-radiative energy transfer from trivalent dysprosium and terbium (donors) to holmium and erbium (acceptors) respectively has been observed on the basis of decrease in the life time of the levels and reduction in fluorescence intensity of Dy3+ and Tb3+ on increasing Ho and Er concentrations. The interaction mechanism of donor and acceptor ions is found to be dipole-dipole in both cases. Various parameters such as donor-acceptor distances, non-radiative energy transfer efficiency (η) and energy transfer probability (P da) have been computed. Stark splitting have also been marked in several intense transition of the two.

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Authors and Affiliations

  1. Department of Physics, Banaras Hindu University, 221 005, Varanasi, India

    Brajesh Sharma, V B Singh, D K Rai & S B Rai

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  1. Brajesh Sharma
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  2. V B Singh
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  3. D K Rai
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  4. S B Rai
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Sharma, B., Singh, V.B., Rai, D.K. et al. Stark splitting and energy transfer between Dy3+-Ho3+ and between Tb3+-Er3+ in calcium-lithium borate glass. Pramana - J Phys 50, 405–418 (1998). https://doi.org/10.1007/BF02847370

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  • DOI: https://doi.org/10.1007/BF02847370

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