Energy transfer in Tb:Nd system and composition dependence of the J-O parameters and radiative properties of Nd3+ ions of fluorophosphate glasses

G. Ajith Kumar; Elder de la Rosa-Cruz; Oracio Barbosa-Garcia

doi:10.1117/12.424782

27 April 2001 Energy transfer in Tb:Nd system and composition dependence of the J-O parameters and radiative properties of Nd³⁺ions of fluorophosphate glasses

G. Ajith Kumar, Elder de la Rosa-Cruz, Oracio Barbosa-Garcia

Author Affiliations +

Proceedings Volume 4282, Rare-Earth-Doped Materials and Devices V; (2001) https://doi.org/10.1117/12.424782
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

The mechanism of non-radiative energy transfer between Tb³⁺ and Nd³⁺ ions in fluorophosphate glass has been analyzed with the Forster-Dexter theory. Several/transfer parameters such as the transfer probability, transfer efficiency, critical transfer distance, and critical concentration have been evaluated by fitting the experimental fluorescence spectrum of those ions with that theory. The recorded emission spectrum of Tb³⁺ with different Nd³⁺ ion concentrations shows that the transfer process from the ⁵D₄ state of Tb³⁺ to the ⁴G_5/2 state of Nd³⁺ is driven predominantly by a dipole-dipole interaction. The effect of this energy transfer is to considerably enhance the optical gain of the ⁴F_3/2 to ⁴I_11/2 emission band of Nd³⁺ ions. The reduction in optical gain at high activator concentrations is attributed to the concentration quenching in Nd³⁺ ion pairs. In addition to this, the dependence of the J-O parameters, several radiative properties of Nd³⁺ ions in the phosphate content as well as the nature of alkali content were also studied.

Citation Download Citation

G. Ajith Kumar, Elder de la Rosa-Cruz, and Oracio Barbosa-Garcia "Energy transfer in Tb:Nd system and composition dependence of the J-O parameters and radiative properties of Nd³⁺ions of fluorophosphate glasses", Proc. SPIE 4282, Rare-Earth-Doped Materials and Devices V, (27 April 2001); https://doi.org/10.1117/12.424782

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