| 有振幅调制光束经锯齿光阑的衍射特性 |
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| 引用本文： | 刘永欣,吕百达. 有振幅调制光束经锯齿光阑的衍射特性[J]. 激光技术, 2006, 30(1): 50-52,59 |
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| 作者姓名： | 刘永欣 吕百达 |
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| 作者单位： | 四川大学,激光物理与化学研究所,成都,610064;四川大学,激光物理与化学研究所,成都,610064 |
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| 摘 要： | 用惠更斯-菲涅耳衍射积分对有振幅调制光束经锯齿光阑的衍射作了研究,并与经圆孔硬边光阑的衍射作了计算比较.另外讨论了锯齿光阑参数对有振幅调制光束衍射特性的影响.结果表明,锯齿光阑有较大的填充因子,能抑制轴上光强的衍射调制,并降低横向光强分布的不均匀性.
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| 关 键 词： | 激光光学 有振幅调制光束 锯齿光阑 衍射调制 |
| 文章编号： | 1001-3806（2006）01-0050-03 |
| 收稿时间： | 2004-12-09 |
| 修稿时间： | 2004-12-092005-08-15 |
Diffraction of laser beams with amplitude modulations passing serrated apertures |
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| LIU Yong-xin,L Bai-da. Diffraction of laser beams with amplitude modulations passing serrated apertures[J]. Laser Technology, 2006, 30(1): 50-52,59 |
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| Authors: | LIU Yong-xin L Bai-da |
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| Affiliation: | Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China |
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| Abstract: | Based on the Huygens-Fresnel diffraction integral, the diffraction of laser beams with amplitude modulations passing serrated apertures is studied and compared with hard-edged circular apertures numerically. Furthermore, the effect of aperture parameters on the diffractlon characteristics of laser beams with amplitude modulations is also analyzed. It is shown that, while maintaining a relatively large fill factor, the use of serrated apertures can suppress the diffraction modulations of axial intensity and reduce the nonuniformity of transversal intensity distributions. |
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| Keywords: | laser optics laser beams with amplitude modulations serrated apertures diffraction modulation |
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