Enhanced 2-μm and upconversion luminescence properties regulated by network structure in Ho3+/Yb3+ co-doped germanate laser glasses

Authors：Tang, Guowu; Yang, Dongliang; Huang, Wenhua; Song, Xiangyang; Zhang, Fangteng; Qian, Qi; Zhao, Weiren; Yang, Zhongmin^*

Source：Optics Letters, 2023, 48(3): 534-537.

DOI：10.1364/OL.479494

• MU-M EMISSION

Rare-earth (RE) ions doped laser glass has attracted the interest of many researchers because of its numerous potential applications in planar waveguides and fiber lasers. In this work, the 2-mu m and upconversion luminescence properties of Ho3+ are simultaneously enhanced through the design of components used to regulate the network structure of the germanate glass. Furthermore, the thermal, structural, and spectroscopic properties of the Ho3+/Yb3+ co-doped germanate laser glass are systematically investigated. It is noted that the calculated gain coefficient of the Nb2O5 modified germanate laser glass can reach as high as 3.05 cm(-1) at 2047 nm. These results suggest that the prepared germanate laser glass with superior performances is a promising candidate for 2-mu m mid-infrared laser materials applications.

• Institution
  广东工业大学