Dopant occupancy and optical properties of Ho³⁺ in Hf: Ho: LiNbO₃ crystal

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• 作者：Li Dai^a ; ^{daili198108@126.com" class="auth_mail} ; Shanshan Jiao^a ; Chao Xu^b ; Zhao Qian^c ; Jiaqi Lin^a ; Yuheng Xu^b
• 关键词：Hf ; Ho ; LiNbO3 ; X-ray powder diffraction spectrum ; Optical homogeneity ; Absorption spectrum
• 刊名：Journal of Luminescence
• 出版年：June, 2014
• 年：2014
• 卷：150
• 期：Complete
• 页码：19-24
• 全文大小：1063 K

文摘

A series of Hf: Ho: LiNbO₃ crystals with a fixed concentration of Ho₂O₃(0.5 mol%) and varied HfO₂ were grown. The effect of Hf⁴⁺ ion on the dopant occupancy and optical properties of Ho³⁺ ion in Hf: Ho: LiNbO₃ crystals were investigated. To detect the optical properties of the crystals, X-ray diffraction (XRD) patterns and UV-vis spectra were registered. Furthermore, the Judd-Ofelt spectroscopic analysis was employed for the Hf: Ho: LiNbO₃ crystals. The results showed that the and parameters increased with the increase of Hf⁴⁺ concentration. Notably, HfO₂ incorporation exhibited an intensive effect on the radiative lifetime, but less influence on fluorescence branching ratios.