Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5399008 | Journal of Luminescence | 2016 | 9 Pages |
Abstract
Erbium ions in inorganic, insulating gain media show a wide variety emission wavelengths - including ultra-violet, visible (red, green and blue), near-IR (â¼800Â nm, â¼980Â nm, â¼1550Â nm) and mid-IR (â¼3000Â nm). Erbium is an interesting ion providing multiple paths to emit multiple wavelengths. The energy levels corresponding to these wavelengths can be populated by converting lower-energy photons into higher energy photons by various energy-transfer mechanisms. Different energy-transfer mechanisms may be present at different concentrations of erbium in the insulating host matrix. Some of these mechanisms are difficult to prove experimentally. We present a novel approach to study utilizing a dual-pump scheme to elucidate some of the energy-transfer mechanisms/pathways in erbium-doped ceramic yttria. By dynamically changing the populations in intermediate energy-levels, we could track the energy-transfer paths, yielding information on the dynamic nature of energy-transfer in RE-doped materials. The parameters controlled in this study were the concentration of the active ion, the pump wavelengths and pump power.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Abhijeet Joshi, Oscar. M. Stafsudd,