帮我检查下面这句话并润色：Singly doped HoYAG material is a preferred option for achieving high power 209μm laser output owing to its low quantum defect 6 superior thermal stability and mechanical robust The strong

"Singly doped Ho:YAG material is the preferred option for achieving high-power 2.09μm laser output due to its low quantum defect [6], superior thermal stability, and mechanical robustness. The strongest absorption band of Ho:YAG is at 1.9μm, which can be directly pumped by GaSb-based laser diodes."