Photoluminescence and energy transfer mechanisms of Tm³⁺ doped YO laser crystals: Experimental and theoretical insights

Meng JU, Hongkuan YUAN, Wenhao JI, Lei ZHAO, Yang XIAO, Yau Yuen YEUNG

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5 Citations (Scopus)

Abstract

Rare-earth thulium (Tm³⁺) doped yttrium oxide (Y₂O₃) host single crystals are promising “eye-safe” laser materials. However, the mechanisms of photoluminescence and energy transfer in Tm³⁺ doped Y₂O₃ crystals are not yet understood at the fundamental level. Here, we synthetize a series of Y₂O₃:Tm³⁺ samples by the sol-gel method. Our experimental results show that the most intensive absorption line of the ³H₆ → ¹D transition occurs at 358 nm, and the strongest emission line of the ¹D → ³F transition is located at 453 nm, which are in good agreement with the calculations of 363 nm and 458 nm, respectively. By using the CALYPSO structural search method, the ground state structure of Y₂O₃:Tm³⁺ withP2 space group symmetry is uncovered. The complete energy levels, including free-ion LS terms and crystal-field LSJ multiplet manifolds, of Y₂O₃:Tm³⁺ are obtained based on our developed WEPMD method. The present findings show that our WEPMD method can be used in experiments to elucidate the underlying mechanisms of photoluminescence and energy transfer in Tm³⁺ doped Y₂O₃ crystals, which offer insights for further understanding of other rare-earth doped laser materials. Copyright © 2023 Royal Society of Chemistry.

Original languageEnglish
Pages (from-to)25273-25279
JournalPhysical Chemistry Chemical Physics
Volume25
Issue number37
Early online dateAug 2023
DOIs
Publication statusPublished - Oct 2023

Citation

Ju, M., Yuan, H., Ji, W., Zhao, L., Xiao, Y., & Yeung, Y. (2023). Photoluminescence and energy transfer mechanisms of Tm³⁺ doped Y₂O₃ laser crystals: Experimental and theoretical insights. Physical Chemistry Chemical Physics, 25(37), 25273-25279. https://doi.org/10.1039/D3CP03692H

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