Probing the vortex beams with fractional and integral topological charges using weak random scattering screen

被引：0
|
作者：
Man Liu
机构：
[1] School of Science,
[2] Qilu University of Technology,undefined
[3] College of Physics and Electronics,undefined
[4] Shandong Normal University,undefined
来源：
The European Physical Journal D | 2013年 / 67卷
关键词：
Optical Phenomena and Photonics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
By use of the numerical calculation based on the Kirchhoff Green’s integral theorem, we study the intensity distributions of speckle fields behind the weak random scattering screens illuminated by the Laguerre-Gaussian beams. It is found that the profile of bright spot similar to the peacock-feather-like in intensity distributions of speckle field, those bright spots show uniform distribution around the central dark spots, and the number of bright spots is related to the topological charges of the vortex beams. We are able to probe the topological charges of Laguerre-Gaussian beams directly by observing the bright spots in the intensity distributions patterns.
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