Title

Vestigation Of The Interactions Between Dissimilar Ions In (Er, Nd):Y3Al5O12

Abstract

Unusual fluorescence decay properties of both Er3+ and Nd3+ ions in (Er, Nd):YAG are reported. Studies reveal that the cross-relaxation-type ion-ion interactions involving Er3+ and Nd3+ ions are responsible. A rate-equation analysis is used to evaluate the interaction strengths of all the proposed processes. The rate-equation calculation does not fully explain the nonexponential nature of the measured fluorescence decay function of the 4F3 /2 Nd3+ ions. As a result, the theory for donor-acceptor energy transfer processes, based on the inverse-power transfer rate model, is adopted to study the mechanism of the interactions between Er3+ and Nd3+ ions that result in the drastically altered fluorescence decay of Nd3+ ions. It is found that the mechanisms governing the energy transfer processes have functional forms different from those for the commonly encountered electric multipolar interactions. The interaction strengths are evaluated by least-squares fitting of the theory to the experimental data. Effects of the ion-ion interactions on lasing properties of the (Er, Nd):YAG are also discussed. © 1989, Optical Society of America.

Publication Date

1-1-1989

Publication Title

Journal of the Optical Society of America B: Optical Physics

Volume

6

Issue

1

Number of Pages

23-29

Document Type

Article

Identifier

scopus

DOI Link

https://doi.org/10.1364/JOSAB.6.000023

Socpus ID

84975542891 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84975542891

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