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Growth and spectral properties of Er:NaGd(WO4)2 crystal
Authors:Jianhua Huang  Xinghong Gong  Yanfu Lin  Zundu Luo
Affiliation:a National Engineering Research Center for Optoelectronic Crystalline Materials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Abstract:
A high optical quality Er3+-doped NaGd(WO4)2 single crystal with dimensions of ∅18 × 50 mm3 has been grown using the Czochralski method. The structure of the grown crystal was proved by X-ray powder diffraction. The accurate concentration of Er3+ ion in the crystal was measured. The absorption spectra, fluorescence spectra and fluorescence lifetime of the crystal were measured at room temperature. Green up-conversion luminescence has been observed when the crystal is excited at 965 nm.
Keywords:Crystal growth   Optical materials and properties   Er3+:NaGd(WO4)2 crystal
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