Crystal growth and spectroscopic analysis of Ho,Pr:Lu2O3 crystal for a 2.9 µm mid-IR laser

• DOI: 10.1364/ome.476359
• Publication Date: 2022-12-14T04:00:08Z
• Authors: Jianda Li; Jianshu Dong; Xiao Cao; Qingsong Song; Xiaodong Xu; Yanyan Xue; Huili Tang; Qingguo Wang; Jun Xu
• Keywords: Crystal (programming language); Branching fraction

The EFG technique was used to successfully grow a crystal of Ho,Pr:Lu 2 O 3 . crystal's spectroscopic features were investigated. has an absorption cross-section 0.47 × 10 −20 cm at 647 nm and 0.20 1147 nm. fluorescence characteristics the grown 2.9 µm examined using J-O theory. Calculations made for intensity parameters Ω t (t = 2, 4, 6), radiative transition rates, branching ratios, lifetime. demonstrated significant emission 2104 2893 nm, with stimulated cross sections 2.96 −21 4.24 , respectively. Ho 3+ 5 I 6 7 levels found have lifetimes 0.55 ms 3.23 ms,