Stark splitting and spectroscopic properties improvement of Yb3+-doped phosphate glass with SiO2 modification

Abstract

This study focuses on the Stark splitting and spectroscopic properties of Yb3+-doped phosphate glass with SiO2 modification. Stark splitting levels were calculated through deconvolution absorption and emission spectra. The coordination environment of Yb3+ ions was investigated to explain the enlarged Stark splitting. Spectroscopic parameters were given to characterized the effect of SiO2 on spectroscopic properties. The increased crystal field parameter and more asymmetric coordination environment lead to the enlargerd Stark splitting with the increase of SiO2 content. The constantly enhanced absorption cross-section, emission cross-section, and systematic factor values suggest that spectroscopic properties were improved through the addition of SiO2. The glass with 9 mol% SiO2 addition has largest Stark splitting and optimum spectroscopic performances, indicating that it is most likely to be applied to laser application.