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无衍射Bessel及Bessel-Gauss光的理论与实验

DOI: 10.11830/ISSN.1000-5013.2008.04.0514

Keywords: Bessel光束, Bessel-Gauss光束, 轴棱锥, 光强分布

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Abstract:

理论分析Bessel光束和Bessel-Gauss光束的相互联系及区别,数值模拟理想Bessel光束和Bessel-Gauss光束在任意平面的径向光强分布,以及光腰半径和谐振腔腔长对输出Bessel-Gauss光束的影响.模拟结果表明,相对于Bessel光,Bessel-Gauss光衰减较快,实验结果也验证了理论分析.同时,光腰半径越大,光强的径向分布衰减越慢; 而腔长越大,其主模式的振幅分布衰减越慢.

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