| 高斯光束照射下的单缝衍射 |
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| 引用本文： | 刘秋武,张庆.高斯光束照射下的单缝衍射[J].韩山师范学院学报,2008,29(6). |
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| 作者姓名： | 刘秋武 张庆 |
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| 作者单位： | 韩山师范学院物理与电子工程系,广东潮州,521041 |
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| 基金项目： | 韩山师范学院2006年青年科研基金资助项目
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| 摘 要： | 根据菲涅耳-基尔霍夫衍射理论，将高斯光束的高斯振幅分布近似用抛物线代替，推导出高斯光束照射下单缝衍射光场分布的近似解及其成立条件，并通过实验和数值仿真，讨论了衍射光场的基本特性．
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| 关 键 词： | 单缝 高斯光束 夫琅禾费衍射 菲涅耳衍射 |
Diffraction of Gaussian Laser Beam at a Single Slit |
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| LIU Qiu-wu,ZHANG Qin.Diffraction of Gaussian Laser Beam at a Single Slit[J].Journal of Hanshan Teachers College,2008,29(6). |
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| Authors: | LIU Qiu-wu ZHANG Qin |
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| Institution: | LIU Qiu-wu,ZHANG Qin (Department of Physics , Electronic Engineering,Hanshan Normal University,Chaozhou 521041,China) |
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| Abstract: | Basing on Fresnel-kirchhoff theory,we devise formulas of diffraction of Gaussian laser beam at a single slit by approximating the Gaussian function as parabola function.According the formulas,we compute the distribution of diffraction light intensity,the results show that they are accordant with the experiment,and last,we discuss the characteristics of the Fresnel diffraction and the Fraunhofer diffraction. |
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| Keywords: | single slit Fresnel diffraction Fraunhofer diffraction Gaussian beam |
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