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| 含滤波器多模光纤激光器有效反射率的分析 | |
| 引用本文： | 周继芳,段志春,高曾辉,陈建国.含滤波器多模光纤激光器有效反射率的分析[J].四川师范大学学报(自然科学版),2011,34(4):551-555. |
| 作者姓名： | 周继芳 段志春 高曾辉 陈建国 |
| 作者单位： | 1. 成都医学院人文信息管理学院,四川成都610081;四川大学电子信息学院,四川成都610064 2. 宜宾学院计算物理四川省高校重点实验室,四川宜宾,644000 3. 四川大学电子信息学院,四川成都,610064 |
| 基金项目： | 四川省教育厅自然科学重点基金(10ZA063)资助项目 |
| 摘 要： | 基于改善多模光纤激光器输出光束质量目的,提出了其含有抑制高阶模输出的光纤滤波器的理论模型.运用模式耦合理论,对此模型进行了理论分析,导出了滤波器与端面反射镜构成系统有效反射率的表达式.并根据其表达式作了数值模拟,结果为:对于含滤波器的多模光纤激光器,其高阶模的有效反射率较小,低阶模的有效反射率较大.结论表明,在多模光纤激光器系统中设置一个光纤滤波器,使得低阶模比高阶模更容易起振,可以有效地改善其输出光束的质量,为实验研究提供了一定的理论依据. |
| 关 键 词： | 光纤滤波器 多模光纤激光器 有效反射率 光束质量 |
Analysis of Effective Reflectivity about Multimode Fiber Laser Containing Spatial Filter |
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| ZHOU Ji-fang,DUAN Zhi-chun,GAO Zeng-hui,CHEN Jian-guo.Analysis of Effective Reflectivity about Multimode Fiber Laser Containing Spatial Filter[J].Journal of Sichuan Normal University(Natural Science),2011,34(4):551-555. | |
| Authors: | ZHOU Ji-fang DUAN Zhi-chun GAO Zeng-hui CHEN Jian-guo |
| Institution: | ZHOU Ji-fang1,3,DUAN Zhi-chun2,GAO Zeng-hui2,CHEN Jian-guo3(1.Department of Humanistic Information Management,Chengdu Medical College,Chengdu 610081,Sichuan,2.Computational Physics Key Laboratory of Sichuan Universities and Colleges,Yibin College,Yibin 644000,3.College of Electronics and Information Engineering,Sichuan University,Chengdu 610064,Sichuan) |
| Abstract: | Based on improving the output beam quality of the multimode fiber lasers,the theoretical model of the system containing a spatial filter which depresses the output of the higher-order mode has been sketched.Using the coupling theory of the modes,the performances of the system have been discussed,and the analytical expression for the effective reflectivity of the system with the filter and the end face mirror has been derived.After the calculations and discussions,it is found that,for the fiber laser with a ... |
| Keywords: | fiber filter multimode fiber lasers effective reflectivity beam quality |
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