Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7907971 | Optical Materials | 2017 | 4 Pages |
Abstract
Up-conversion luminescence spectra of Er3+ ions in multicomponent oxyfluoride glasses GeO2 - BaO - BaF2 - Ga2O3 - Er2O3 were examined. It was found that the up-conversion luminescence spectra of Er3+ are dependent on pumping wavelengths. The spectra recorded upon the excitation at 800 nm contained an intense green up-conversion luminescence corresponding to the 2H11/2,4S3/2 â 4I15/2 transitions and a very weak red luminescence related to the 4F9/2 - 4I15/2 transition. In spectra recorded upon 980 nm excitation the contribution of the red luminescence was markedly higher. The interaction mechanisms involved in up-conversion processes are proposed and observed dependence of intensity of up-converted luminescence on excitation power is discussed. The experimental results suggest that Er3+ singly doped lead-free oxyfluoride germanate glass is useful for up-conversion luminescence applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
J. Janek, R. Lisiecki, W. Ryba-Romanowski, J. Pisarska, W.A. Pisarski,