Effect of chloride ion introduction on structural and 15 μm emission properties in Er^3+-doped fluorophosphate glass

Abstract

Effects of chloride ion introduction on structural and 1:5 μm emission properties in Er 3þ -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 Er 3þ -doped chloride fluorophosphate glass indicate that it is a promising material for 1:5 μm lasers.

Origin of near to middle infrared luminescence and energy transfer process of Er3+/Yb3+co-doped fluorotellurite glasses under different excitations

“…The lifetime is an important factor for potential laser materials. The full width at half maximum (FWHM) 32 determines 1.5 μm laser materials. The larger bandwidth of this transition is suitable for tunable lasers that deliver relatively constant power over a wide wavelength range.…”

Structural characterisation of tin fluorophosphate glasses doped with Er2O3

“…The atomic or molecular structure of Er-doped fluorophosphate glass is still unclear, despite previous studies. (6,14) In the present study, advanced experimental methods, such as EXAFS (extended x-ray absorption fine structure) and Raman microscopy, were used to investigate the structure of undoped and Er-doped tin fluorophosphate glasses. The main goal of this work is to clarify the coordination of Sn and Er in the glass matrix, and to verify the molecular structure of the glasses, especially in Er-doped compositions.…”

Novel Synthesis of Low Hydroxyl Content Yb3+‐Doped Fluorophosphate Glasses with Long Fluorescence Lifetimes

“…illustrates that Method‐4 has higher content of fluorine atom and lower content of oxygen atom than those of Method‐3. It means that the glass matrix has lower polarizability, resulting in the smaller covalence of the bond between Yb 3+ ions and ligand in Method‐4 than that in Method‐3 . Therefore, the glasses dehydrated by CCl 4 have longer fluorescence lifetime and lower emission cross section.…”