1.53 μm luminescent properties and energy transfer processes of Er3+/Yb3+ co-doped bismuth germanate glass laser material

• Published in: Journal of luminescence 2021-11, Vol.239, p.118300, Article 118300
• Main Authors: Tan, Fang, Xu, Pengfei, Zhou, Dechun, Wang, Lili, Yang, Qiang, Song, Xiangyang, Han, Kexuan
• Format: Article
• Language: English
• Subjects: 1.53 μm; Bismuth glass; Er3+/Yb3+ co-doped
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2021.118300

In this work, Er3+/Yb3+ co-doped 40Bi2O3-30GeO2-15Ga2O3-15Na2O glass was papered by melt-quenching method. The thermal properties and spectroscopic were studied. The glass has good thermal stability and the maximum phonon energy is 750 cm−1, which is benefited for 1.53 μm emission. According to the J-O theory and absorption spectra, the J-O intensity parameters were calculated, the spectral quality factor χ = Ω4/Ω6 of BGGN4 glass is 2.236. Under 980 nm excitation, the 1.53 μm luminescence characteristics of these glasses were studied. When the Er3+/Yb3+ ions doping concentration ratio (mol%) reaches 0.5:1.0, the maximum fluorescence intensity can be obtained, and the maximum emission cross section is 6.4 × 10−21cm2. The maximum stimulated gain coefficient in the 1.53 μm band is 4.6 cm−1. Finally, the up-conversion emission and energy transition mechanism of Er3+/Yb3+ co-doped BGGN glass were studied. The results indicate the prepared Er3+/Yb3+ co-doped bismuth germanate glass have good gain performance and is an ideal 1.53 μm laser gain material. •Er3+/Yb3+ co-doped 40Bi2O3-30GeO2-15Ga2O3-15Na2O glass was prepared by melt-quenching method.•The prepared glass has relatively low maximum phonon energy (750 cm−1).•Large σemi indicate good gain properties of prepared glass.•Up-conversion and energy transfer mechanism are analyzed.