| 非球面透镜组激光光束整形系统 |
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| 引用本文： | 范增明,李卓,钱丽勋. 非球面透镜组激光光束整形系统[J]. 红外与激光工程, 2012, 41(2): 353-357 |
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| 作者姓名： | 范增明 李卓 钱丽勋 |
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| 作者单位： | 北京理工大学光电学院,北京,100081 |
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| 摘 要： | 在激光显示等领域常常需要光强均匀分布的激光光束,为此,深入分析了一种非球面透镜组激光光束整形系统的设计方法,该方法可以将入射光束为准直的单模高斯激光光束整形为光强均匀分布的准直平顶激光光束;给出了该非球面透镜组设计的基本过程,主要包括输出光束函数的选择、光线映射函数的确定和非球面参数的确定;最后选择光线映射函数具有解析解形式的匀化洛伦兹函数作为输出光束分布函数,分别确定了伽利略型和开普勒型的非球面透镜组激光光束整形系统的参数。
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| 关 键 词： | 激光光束整形 激光光束匀化 非球面透镜组 匀化洛伦兹函数 |
Aspherical lens laser beam shaping system |
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| Fan Zengming , Li Zhuo , Qian Lixun. Aspherical lens laser beam shaping system[J]. Infrared and Laser Engineering, 2012, 41(2): 353-357 |
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| Authors: | Fan Zengming Li Zhuo Qian Lixun |
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| Affiliation: | (School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | Laser beam with uniform light intensity distribution is usually used in the areas such as laser displays.A method of using two aspherical lens to convert a single mode collimated laser beam with Gaussian light intensity distribution to a collimated flat-top beam with uniform light intensity distribution was introduced.Also the basic process of designing an aspherical lens system,mainly including choosing the function of the output beam,determing the ray mapping function and the parameters of the aspherical lens was proposed.According to this design method,the parameters of Galilean configuration and Keplerian configuration aspherical lens laser beam shaping system were determined respectively by selecting the Flattened Lorentzian function as the output beam distribution function which had an analytical ray mapping function. |
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| Keywords: | laser beam shaping laser beam homogenization aspherical lens system flattened Lorentzian function |
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