Diffraction characteristics of serrated circular aperture with random radius - 文章详情页

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摘要：

This　paper　studies　the　diffraction　characteristics　of　a　serrated　circular　aperture　with　random　radius,　and　puts　forward　and　proves　that　the　aperture　can　further　improve　the　near-field　distribution　of　the　beam　and　reduce　the　diffraction　modulation　in　the　beam　center.　The　simulation　results　of　the　axial　diffraction　and　the　intensity　distribution　in　the　cross　section　are　given,　which　shows　the　diffraction　light　after　this　aperture　has　higher　filling　factor　and　lower　modulation　rate　compared　with　that　after　the　amplitude　modulation　serrated　aperture.　The　intensity　modulation　of　Fresnel　diffraction　on　the　axis　is　suppressed　by　using　the　random　radius　serrated　aperture　in　larger　space.　The　farthest　range　of　suppression　can　reach　0.15　m.

关键词：

Amplitude modulation Diffraction

作者机构：

[ 1 ] [Wang, Jinguo]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Zhu, Zhanda]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Sun, Zhe]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Hui, Yongling]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Lei, Hong]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Li, Qiang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China

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电子邮件地址：

zhuzhanda@emails.bjut.edu.cn

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