Fabrication and comprehensive structural and spectroscopic properties of Er:Y2O3 transparent ceramics |
| |
| Affiliation: | 1. School of Communication and Electronics Engineering, East China Normal University, Shanghai 200241, China;2. Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;3. Shanghai Research Center for Quantum Sciences, Shanghai 201315, China;4. School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore;5. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
| |
| Abstract: | Transparent Er:Y2O3 ceramics with sub-micron grain size (<1 μm) were fabricated by using one-step vacuum sintering followed by hot isostatic pressing (HIPing) technique. The transmission of the undoped 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, fluorescence 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. |
| |
| Keywords: | Erbium Sesquioxides Vibrational energy Red-shift Up-conversion Judd–Ofelt theory |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
