| Judd-Oflet analysis of spectrum and laser performance of Ho：YAP crystal end-pumped by 1.91μm Tm：YLF laser |
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| 作者姓名： | 姚宝权 郑亮亮 杨晓涛 王天衡 段小明 赵广军 董勤 |
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| 作者单位： | National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China;National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China;National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China;National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China;National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China;R&D Center for Laser and Opto-Electronic Materials,Shanghai Institute of Optics and Fine Mechanics, Chinese Academyof Sciences, Shanghai 201800, China;R&D Center for Laser and Opto-Electronic Materials,Shanghai Institute of Optics and Fine Mechanics, Chinese Academyof Sciences, Shanghai 201800, China |
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| 基金项目： | Project supported bythe Program of Excellent Team in Harbin Institute of Technology ofChina. |
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| 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 × 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.
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| 关 键 词： | Ho:YAlO3 solid-state lasers Judd-Ofelt analysis Tm:YLF laser |
| 收稿时间： | 2008-06-19 |
| 修稿时间： | 2008-07-05 |
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