论文部分内容阅读
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 × 10-20 cm2,Ω4 = 2.92 × 10-20 cm2,and Ω6 = 1.71 × 10-20 cm2,this paper calculated the fluorescence lifetime to be 6 ms for 5I7 →5 I8 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.
The Ho: YAP crystal is grown by the Czochralski technique. Room temperature polarized absorption spectra of Ho: YAP crystal was measured on ac cut sample with 1 at% holmium. According to the obtained Judd-Ofelt intensity parameters Ω2 = 1.42 × 10- 20 cm2, Ω4 = 2.92 × 10-20 cm2, and Ω6 = 1.71 × 10-20 cm2, this paper calculated the fluorescence lifetime to be 6 ms for 5I7 → 5 I8 transition, and the integrated emission cross section to be 2.24 × 10 -18 cm 2.It investigates the room temperature Ho: YAP laser end pumped by 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%. Ho: YAP output wavelength was centred at 2118 nm with full width at half maximum of about 0.8 nm.