中国物理B ›› 2009, Vol. 18 ›› Issue (3): 1009-1013.doi: 10.1088/1674-1056/18/3/027
姚宝权1, 郑亮亮1, 杨晓涛1, 王天衡1, 段小明1, 赵广军2, 董勤2
Yao Bao-Quan(姚宝权)a), Zheng Liang-Liang(郑亮亮)a), Yang Xiao-Tao(杨晓涛)a), Wang Tian-Heng(王天衡)a), Duan Xiao-Ming (段小明)a), Zhao Guang-Jun(赵广军)b), and Dong Qin(董勤)b)
摘要: The Ho:YAP crystal is grown by the Czochralski technique. The room-temperature polarized absorption spectra of Ho:YAP crystal was measured on a c-cut sample with 1 at% holmium. According to the obtained Judd--Ofelt intensity parameters Ω2=1.42× 1020 cm2, Ω4=2.92× 1020 cm2, and Ω 6=1.71× 1020 cm2, this paper calculated the fluorescence lifetime to be 6 ms for 5I7→5I8 transition, and the integrated emission cross section to be 2.24× 10-18 cm2. It investigates the room-temperature Ho:YAP laser end-pumped by a 1.91-μm Tm:YLF laser. The maximum output power was 4.1 W when the incident 1.91-μm pump power was 14.4 W. The slope efficiency is 40.8%, corresponding to an optical-to-optical conversion efficiency of 28.4%. The Ho:YAP output wavelength was centred at 2118 nm with full width at half maximum of about 0.8 nm.
中图分类号: (Doped-insulator lasers and other solid state lasers)