| 激光扩束系统衍射现象数值计算 |
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| 引用本文： | 田兆硕,陈卫标,胡企铨.激光扩束系统衍射现象数值计算[J].应用激光,2004,24(1):43-44. |
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| 作者姓名： | 田兆硕 陈卫标 胡企铨 |
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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,201800;可调谐激光技术国家级重点实验室,哈尔滨工业大学,150001
2. 中国科学院上海光学精密机械研究所,201800 |
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| 摘 要： | 本文在标量衍射理论的基础上 ,应用柯林斯公式数值计算了高斯光束经过通光口径较小的扩束光学系统后的光强分布 ,结果表明出射激光光束的束散角虽然可以压缩 ,但往往不是高斯光束 ,而是具有亮暗相间的多个环状光束。本文的分析对于激光扩束光学系统及其它光学系统的设计具有一定的参考价值
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| 关 键 词： | 激光扩束系统 柯林斯公式 标量衍射理论 |
Numerical calculation of diffraction for laser expanding system |
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| Tian Zhaoshuo , Chen Weibiao Hu Qiquan.Numerical calculation of diffraction for laser expanding system[J].Applied Laser,2004,24(1):43-44. |
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| Authors: | Tian Zhaoshuo Chen Weibiao Hu Qiquan |
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| Affiliation: | Tian Zhaoshuo 1,2 Chen Weibiao 1 Hu Qiquan 1 |
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| Abstract: | In this paper, on basis of the theory of scalar diffraction, Collins equation is used to numerically calculate laser intensity distribution after Gaussian laser beam passes beam expanding telescope system with small aperture. Though the beam divergence angle can be reduce, the results show that output light distribution is not Gaussian beam, however with many bright and dark diffraction rings. This kind of analysis is helpful for design of the beam expanding system and other optical systems. |
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| Keywords: | laser expanding system Collons equation beam transformation |
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