Measuring the topological charge of optical vortices with an axicon
We analyzed the spatial spectrum of the diffraction intensity pattern of an ideal Bessel beam and found an implicit rule that the number of the bright rings in the spatial spectrum is equal to the topological charge of the Bessel beam. The radius of the bright and dark rings has some relation with t...
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| Published in | Optics letters Vol. 36; no. 11; p. 2017 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.06.2011
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| Abstract | We analyzed the spatial spectrum of the diffraction intensity pattern of an ideal Bessel beam and found an implicit rule that the number of the bright rings in the spatial spectrum is equal to the topological charge of the Bessel beam. The radius of the bright and dark rings has some relation with the topological charge and can be determined accurately. It provides us with a new way for measuring the topological charge of an optical vortex through its diffraction intensity pattern after an axicon. The results of simulation coincide with the theory. |
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| AbstractList | We analyzed the spatial spectrum of the diffraction intensity pattern of an ideal Bessel beam and found an implicit rule that the number of the bright rings in the spatial spectrum is equal to the topological charge of the Bessel beam. The radius of the bright and dark rings has some relation with the topological charge and can be determined accurately. It provides us with a new way for measuring the topological charge of an optical vortex through its diffraction intensity pattern after an axicon. The results of simulation coincide with the theory. |
| Author | Han, Yujing Zhao, Guanghui |
| Author_xml | – sequence: 1 givenname: Yujing surname: Han fullname: Han, Yujing email: yjhan1981@yahoo.com.cn organization: Department of Physics, Heze University, Heze 274015, China. yjhan1981@yahoo.com.cn – sequence: 2 givenname: Guanghui surname: Zhao fullname: Zhao, Guanghui |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/21633434$$D View this record in MEDLINE/PubMed |
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| Title | Measuring the topological charge of optical vortices with an axicon |
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