| 钛宝石端面泵浦Yb~(3+):YAG激光器输出功率的理论分析 |
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| 引用本文： | 张智群,黄志云,邱怡申,李高明.钛宝石端面泵浦Yb~(3+):YAG激光器输出功率的理论分析[J].福建师范大学学报(自然科学版),2009,25(2). |
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| 作者姓名： | 张智群 黄志云 邱怡申 李高明 |
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| 作者单位： | 福建师范大学激光与光电子技术研究所,福建省光子技术重点实验室,医学光电科学与技术教育部重点实验室,福建,福州,350007 |
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| 摘 要： | 从准三能级速率方程出发,模拟分析了940 nm钛宝石激光端面泵浦Yb3+:YAG输出1 030 nm激光的性能.在此过程中,着重考虑了泵浦光的吸收饱和以及Yb3+的自吸收损耗.结果表明:由于输出波长在1 030 nm附近的Yb3+:YAG晶体存在严重的自吸收损耗,入射功率必须足够强时才能有激光输出,因此激光器的阈值较高;同时,自吸收损耗与Yb3+离子浓度、晶体厚度有关,存在最佳的晶体厚度和Yb3+离子浓度,使激光器的输出功率最大.泵浦光的吸收饱和使激光器运转时激光下能级的粒子数减少,吸收系数下降,相同入射泵浦功率时,激光器的输出功率较低.
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| 关 键 词： | 激光器 钛宝石激光 端面泵浦 Yb3 :YAG晶体 |
Theoretical Analysis of Yb~(3+):YAG Laser End-pumped by Ti:Sapphire |
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| ZHANG Zhi-qun,HUANG Zhi-yun,QIU Yi-shen,LI Gao-ming.Theoretical Analysis of Yb~(3+):YAG Laser End-pumped by Ti:Sapphire[J].Journal of Fujian Teachers University(Natural Science),2009,25(2). |
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| Authors: | ZHANG Zhi-qun HUANG Zhi-yun QIU Yi-shen LI Gao-ming |
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| Institution: | Institute of Laser and OptoElectronics Technology;Fujian Provincial Key Laboratory for Photonics Technology;Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education;Fujian Normal University;Fuzhou 350007;China |
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| Abstract: | The 1 030 nm output power of Yb3+:YAG laser end-pumped by 940 nm Ti:sapphire laser is studied theoretically,where the model is developed based on the quasi-three-level rate equation.In the derived model,the pump absorption saturation and re-absorption of Yb3+ ion are taken into account.The results show that, due to the significant re-absorption of Yb3+ ion in the lower laser level,it results in the high pump threshold.The loss resulted from re-absorption is affected by the medium length and the active ion c... |
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| Keywords: | lasers Ti:sapphire laser end-pumping Yb3+:YAG crystal |
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