| 准四能级双掺Tm/Ho钒酸钆激光器 |
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| 引用本文： | 张兴宝,姚宝权,王月珠,鞠有伦.准四能级双掺Tm/Ho钒酸钆激光器[J].激光技术,2006,30(2):119-122. |
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| 作者姓名： | 张兴宝 姚宝权 王月珠 鞠有伦 |
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| 作者单位： | 1.哈尔滨工业大学, 光电子技术研究所, 哈尔滨, 150001 |
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| 摘 要： | 在考虑两种离子发光的动力学进展基础上,描述了2μm双掺铥钬(Tm/Ho)系统Tm→Ho能量转移基本过程,建立双掺Tm/Ho系统准四能级速率方程,得出阈值抽运功率和斜率效率的表达式,并利用得出的结论去分析在液氮制冷下光纤耦合激光二极管(LD)端面抽运掺铥钬钒酸钆(Tm/Ho:GdVO4)激光器实验。通过实验,实现了2μmTm/Ho:GdVO4激光器的运转,在抽运功率14W时,激光输出功率3.5W,光-光转换效率25%,阈值抽运功率838mW,理论和实验有很好的一致性。同时也对实验中观测到的上转换绿荧光现象进行了定性的分析。
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| 关 键 词： | 固体激光 光纤耦合LD Tm/Ho:GdVO4晶体 准四能级 能量转移 |
| 文章编号： | 1001-3806(2006)02-0119-04 |
| 收稿时间： | 2004-12-29 |
| 修稿时间： | 2005-08-23 |
Quasi-four-level co-doped Tm/Ho gadolinium vanadate laser |
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| ZHANG Xing-bao,YAO Bao-quan,WANG Yue-zhu,JU You-lun.Quasi-four-level co-doped Tm/Ho gadolinium vanadate laser[J].Laser Technology,2006,30(2):119-122. |
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| Authors: | ZHANG Xing-bao YAO Bao-quan WANG Yue-zhu JU You-lun |
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| Affiliation: | Harbin Institute of Technology, Institute of Opto-Electronics, Harbin 150001, China |
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| Abstract: | Based on considering kinetic evolution of the emissions of both ions,the basic processes of energy transfer between thulium(Tm)and holmium(Ho)was analyzed,the quasi-four-level rate equation of thulium(Tm)/holmium(Ho)doped gadolinium vanadate(Tm/Ho∶GdVO4)are given. The expression about threshold pump power and slope efficiency are concluded. At liquid nitrogen cooled temperature the operation of 2μm Tm/Ho∶GdVO4 laser end-pumped by fiber-coupled laser diode(LD)is achieved experimentally. At 14W pump power the maximum 3.5W output power,optical-optical conversion efficiency of 25%,slope efficiency of 26.6% and pumping threshold of 838mW were obtained,theoretical results with experiment results are good agreement. The observed green fluorescence duo to result of up-conversion effect is also analyzed. |
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| Keywords: | solid-state laser fiber-coupled LD Tm/Ho∶GdVO4 crystal quasi-fore-lever energy transfer |
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