J4 ›› 2012, Vol. 25 ›› Issue (3): 50-53.doi: 10.3976/j.issn.1002-4026.2012.03.010

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部分相干环形涡旋的特性研究

李玉铎,李香莹,周立丰,王文磊   

  1. 山东师范大学物理与电子科学学院,山东 济南 250014
  • 收稿日期:2012-03-15 出版日期:2012-06-20 发布日期:2012-06-20
  • 作者简介:李玉铎(1984-),男,硕士研究生,研究方向为光学涡旋。
  • 基金资助:

    山东省教育厅科技研究计划资助项目(J08LI11)

The features of partially coherent ring vortex

 LI Yu-Duo, LI Xiang-Ying, ZHOU Li-Feng, WANG Wen-Lei   

  1. School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • Received:2012-03-15 Online:2012-06-20 Published:2012-06-20

摘要:

       根据部分相干光的传输理论,介绍了部分相干涡旋在光源平面上光强的分布情况,并以环形涡旋光束为例,做了详细的分析,得出相对宽度s/w0和拓扑荷数m的变化,对z=0截面上的光强I分布的影响。还给出了两束平行、离轴的部分相干环形涡旋光束叠加合成的相干涡旋,分析了在叠加场中光强I随离轴相对距离d/w0和相干参数α变化的情况,并且在相干极限α→∞时,复合相干光涡旋就转化成复合光涡旋。

关键词: 奇点光学, 环形涡旋, 复合相干涡旋

Abstract:

       We present the partially coherent nature of the annulus vortex beams based on the transmission theory of partially coherent light. We also make a detailed analysis for the annulus vortex beam. We further discover the impact of the change of the relative width s/w0 and the topological charge intensity distribution number m on light intensity distribution in z=0 section. We give the overlapped coherent vortex of two parallel and off-axis partially coherent beams. We eventually analyze the change of light intensity in a overlapped field with the relative distance from axis d/w0 and the coherent parameter α. Moreover, composite coherent light vortex will change into composite light vortex when the paremeter α approaches infinity.

Key words: singularity optics, annulus vortex, composite coherent vortex

中图分类号: 

  • O436

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