Transparent Er:Y2O3 ceramics with sub-micron grain size(＜1 pm)were fabricated by using one-step vacuum sintering followed by hot isostatic pressing(HIPing)technique.The transmission of the undo-ped Y2O3 reaches 83％.The structural characteristics including the phonon energy were investigated through X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR)analysis and scanning electron microscopy(SEM)measurement.The overall spectroscopic properties of transmission,fluo-rescence emission up to 3000 nm,lifetime,up-conversion luminescence,and refractive index were systematically studied for both 0.25 at％and 7.0 at％Er:Y2O3 ceramics with different thicknesses.The comparison of the spectra of the fluorescence emission and up-conversion luminescence under both 976 and 808 nm laser excitation was performed.The multiple high-energy-state transitional processes after the excited state absorption(ESA)processes involved in the up-conversion are discriminated between the multi-phonon non-radiative transitions and the radiative transitions according to the measured maximum phonon vibrational energy.The calculation was performed based on the Judd-Ofelt theory.

Yan Ling Xue;Feng Zhu;Jun Wang;Shiyu Sun;Lili Hu;Dingyuan Tang

School of Communication and Electronics Engineering,East China Normal University,Shanghai 200241,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China;School of Electrical and Electronic Engineering,Nanyang Technological University,639798,Singapore;Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China

稀土学报（英文版）

[1]Yan Ling Xue;Feng Zhu;Jun Wang;Shiyu Sun;Lili Hu;Dingyuan Tang-.Fabrication and comprehensive structural and spectroscopic properties of Er:Y2O3 transparent ceramics)[J].稀土学报（英文版）,2022(12):1913-1919

HIPing,undo

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