| 子波叠加算法实现方孔菲涅耳衍射的仿真 |
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| 引用本文： | 林继成,何龙庆.子波叠加算法实现方孔菲涅耳衍射的仿真[J].光电技术应用,2008,23(4):74-77. |
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| 作者姓名： | 林继成 何龙庆 |
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| 作者单位： | 南京晓庄学院物理与电子工程学院,江苏,南京,210017 |
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| 基金项目： | 江苏省教育厅自然科学基金 |
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| 摘 要： | 运用数值计算方法对方孔的菲涅耳衍射进行分析和仿真，基于菲涅耳衍射积分和子波的相干叠加法，设计了一种针对方孔菲涅耳衍射的数值算法，并给出了相应的MATLAB程序以及仿真结果．从数值分析结果可以直观而明确地看到，菲涅耳衍射场的光强分布完全由菲涅耳数决定．并对菲涅耳衍射过渡到夫琅禾费衍射时的菲涅耳数的取值进行了讨论．
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| 关 键 词： | 光学 菲涅耳衍射 子波相干叠加 数值模拟 菲涅耳数 |
Simulation for Realizing Fresnel Diffraction of Square Aperture Based on Coherence Superposition of Wavelets Algorithm |
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| LIN Ji-cheng,HE Long-qing.Simulation for Realizing Fresnel Diffraction of Square Aperture Based on Coherence Superposition of Wavelets Algorithm[J].Electro-Optic Technology Application,2008,23(4):74-77. |
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| Authors: | LIN Ji-cheng HE Long-qing |
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| Affiliation: | LIN Ji-cheng, HE Long-qing ( School of Physics and Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 210017, China ) |
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| Abstract: | The intensity distribution of Fresnel diffraction field for square aperture are analyzed and simulated through numerical method. A high performance algorithm of numerical calculations for square aperture diffraction and corresponding MATLAB programs and simulations are presented. The results indicate that the intensity distribution of diffraction light field is determined by Fresnel Number. And the value of Fresnel Number on transition from Fresnel diffraction to Fraunhoer diffraction is discussed. |
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| Keywords: | optics Fresnel diffraction coherence superposition of wavelets numerical simulation Fresnelnumber |
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