Effect of chloride ion introduction on structural and 1.5 μm emission properties in Er3+-doped fluorophosphate glass

Effects of chloride ion introduction on structural and 1.5 mu m emission properties in Er3+-doped fluorophosphate have been investigated. The structural changes revealed by the measured Raman spectra indicate that the chloride ions have an important influence on the phonon density of host glasses. With increasing chloride content, the phonon density of fluorophosphate glasses decreases. The chloride modified fluorophosphate glasses possessing higher thermal stability are suitable for broadband amplifier fiber fabrication. Desirable thermal resistance properties and spectroscopic characteristics of Er3+-doped chloride fluorophosphate glass indicate that it is a promising material for 1.5 mu m lasers. (c) 2011 Optical Society of America