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MDPI, Inorganics, 10(10), p. 170, 2022

DOI: 10.3390/inorganics10100170

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Judd-Ofelt Analysis of High Erbium Content Yttrium-Aluminum and Yttrium-Scandium-Aluminum Garnet Ceramics

Journal article published in 2022 by Vadim Zhmykhov, Elena Dobretsova ORCID, Vladimir S. Tsvetkov, Marina Nikova ORCID, Irina Chikulina, Dmitry Vakalov, Vitaly Tarala, Yurii Pyrkov, Sergey Kuznetsov ORCID, Vladimir Tsvetkov
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The Er1.5Y1.5Al5O12 (Er:YAG) and (Er1.43Y1.43Sc0.14)(Sc0.24Al1.76)Al3O12 (Er:YSAG) ceramics have been characterized using the Judd-Ofelt (JO) theory. The line strengths and oscillator strengths of several transitions from the ground state 4I15/2 to excited state manifolds have been evaluated from transmittance spectra measured at room temperature (300 K). The JO parameters have been calculated, and the values of the radiative decays rate and the radiative lifetimes for the 4I13/2 excited state, and the luminescence cross-section of 4I15/2 → 4I13/2 in Er-doped ceramic samples have been established. We have traced the influence of Sc3+ inclusion on spectroscopic properties and crystal quality and estimate prospects of application in laser systems.