| 波面偏心对共轴透镜axicon衍射图的影响 |
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| 引用本文： | 赵斌,李柱.波面偏心对共轴透镜axicon衍射图的影响[J].应用激光,1997(6). |
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| 作者姓名： | 赵斌 李柱 |
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| 作者单位： | 华中理工大学机械科学与工程学院!武汉，430074，华中理工大学机械科学与工程学院!武汉，430074 |
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| 摘 要： | 应用衍射理论推导出了入射波偏心情况下的衍射圈计算公式。模拟的数值计算的结果与实验一致。同时讨论了偏心后衍射图变化的各种特性，并导出了偏心限制量计算公式。
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| 关 键 词： | 衍射 共轴透镜 偏心 |
Influence of Eccentricity of Wave Front to Diffraction of Axicon |
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| Zhao Bin, Li Zhu.Influence of Eccentricity of Wave Front to Diffraction of Axicon[J].Applied Laser,1997(6). |
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| Authors: | Zhao Bin Li Zhu |
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| Abstract: | Rotational symmetry incident wave can trans formed into approximate nondiffract ing beam by axicon lens in theory. But when the wave is deviated from axial, and the intensity is not symmetry, the diffraction pattern behind the axicon will be changed. The intensity on some area will be increased, and fringe contras ratio will be decreased, and some fringe will become hazy. This phenomena can be analysed and alculated by the Frenel? diffraction theory. The calculated diffraction pattern is agree with the experimental result. From tile calculated formula of diffraction pattern, the calculation formula of eccentricity restriction call be deduced. |
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| Keywords: | diffraction axicon eccentricity |
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