| 基于正交频率变换的高功率蓝绿全固态激光器 |
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| 引用本文： | 戎善奎,余婷,周军,陈卫标.基于正交频率变换的高功率蓝绿全固态激光器[J].中国激光,2007,34(12):1634-1638. |
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| 作者姓名： | 戎善奎 余婷 周军 陈卫标 |
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| 作者单位： | 1. 中国科学院上海光学精密机械研究所,上海,201800;中国科学院研究生院,北京,100039
2. 中国科学院上海光学精密机械研究所,上海,201800 |
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| 摘 要： | 对多横模全固态激光器使用正交频率变换进行了分析,计算了频率转换效率与激光发散角的关系。使用双KTP晶体正交倍频的方法,对Nd∶YAG激光器输出的含有高阶横模的激光进行倍频实验研究。在1064 nm Nd∶YAG激光基波功率密度为121 MW/cm2时,其谐波转换效率达到75.5%。研究表明,对于光束质量较差的基波激光,采用正交频率变换的方式,适当选择晶体参数,同样可以获得较高效率的二次谐波输出。
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| 关 键 词： | 激光器 多模激光 正交频率变换 光束发散角 倍频效率 |
| 收稿时间： | 2006/10/24 |
High Power All-Solid-State Blue-Green Laser Based on Quadrature Frequency Conversion |
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| RONG Shan-kui,YU Ting,ZHOU Jun,CHEN Wei-biao.High Power All-Solid-State Blue-Green Laser Based on Quadrature Frequency Conversion[J].Chinese Journal of Lasers,2007,34(12):1634-1638. |
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| Authors: | RONG Shan-kui YU Ting ZHOU Jun CHEN Wei-biao |
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| Abstract: | The effect of multi transversal mode on quadrature frequency conversion in a solid-state laser was analyzed, and the relation between the conversion efficiency and the divergent angle was conducted. A quadrature frequency conversion scheme using two KTP crystals was implemented in an all-solid-state Nd∶YAG laser with high-order transverse mode. An energy-conversion efficiency of 75.5% is obtained when the fundamental laser intensity is 121 MW/cm2. This experiment indicates that when the parameters of nonlinear crystals are properly optimized, high-efficiency frequency doubling can be achieved using quadrature frequency-conversion scheme even in a multimode solid-state laser. |
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| Keywords: | lasers multi-mode laser quadrature frequency conversion beam divergence angle frequency-doubling efficiency |
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