Excited states dynamics of Er3+ in Sc2O3 ceramic |
| |
| Authors: | A Lupei V Lupei C Gheorghe A Ikesue |
| |
| Institution: | 1. Laboratory of Solid-State Quantum Electronics, Institute of Atomic Physics—INFLPR, 077125 Bucharest, Romania;2. World-Lab. Co. Ltd., Atsuta-ku, Nagoya 4656-8587, Japan;1. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain;2. Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain;3. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain |
| |
| Abstract: | The spectral characteristics of Er3+ in Sc2O3 transparent ceramics are presented. The Er3+ visible spectra in the ceramics, prepared by solid-state synthesis, show only lines that could be assigned to C2 sites. The Stark energy levels, cross-sections and emission kinetics of levels involved in the green upconversion emission under infrared excitation in the 800 nm range were determined. The green upconversion emission (2H11/2, 4S3/2)→4I15/2 characteristics under excitation with a pulsed Ti:sapphire laser in (4I15/2→4I9/2) absorption were analyzed. The emission kinetics reveal a competition of two-step (4I15/2→4I9/2)+(4I9/2→2H9/2) excited state absorption (ESA) and (4I11/2, 4I15/2)→(4I11/2, 4F7/2) energy transfer upconversion (ETU) processes function on the excitation wavelength. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
