Boosting the branching ratio at 900 nm in Nd 3+ doped germanophosphate glasses by crystal field strength and structural engineering for efficient blue fiber lasers

Yafei Wang, Weiwei Chen, Jiangkun Cao, Jianhua Xiao, Shanhui Xu, Mingying Peng

Advanced Materials and Devices (United States)　State Key Laboratory of Luminescent Materials and Devices　South China University of Technology