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无衍射J0光束的理论分析

DOI: 10.3969/j.issn.1000-5013.2006.01.008, PP. 31-34

Keywords: 无衍射J光束,轴棱锥,轴上光强,横截面光强,中心光斑尺寸,最大准直距离

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Abstract:

由同一锥面上的平面波叠加,给出无衍射第一类零阶贝塞尔光束(无衍射J0光束)的解.利用衍射积分理论,导出平面波通过轴棱锥后的光场分布.数值模拟轴上光强和横截面光强的分布,结果证明无衍射光束的最大准直距离的模拟结果与几何光学近似完全吻合.同时,讨论光束半径和轴棱锥棱角对最大准直距离的影响.

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