LAUSR

Abstract To exhibit large emission cross sections of Nd in silica glass, Nd surroundings were regulated in Al/P co-doped silica glass prepared by our multi-step method. The influence of an equimolar amount of Al and P on spectroscopic properties was studied under the local phosphorus coordination environment of Nd. The uniformity of composition distribution was characterized by energy dispersion spectra (EDS) and the coordination environment of Nd ions was characterized by the electron paramagnetic resonance (EPR) spectra. The results indicate that the composition distribution is of high uniformity and Nd has a stronger interaction with P atoms than Al atoms regardless of Al/P molar ratio. Local phosphorus coordination environment of Nd ions in silica glass is achieved. Large σem can be achieved when Al or P is excessive, and larger σem is more likely achieved when P is much more than Al. This work brings new possibilities for obtaining large stimulated cross sections of Nd in silica glass.