| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Propagation and focusing characteristics of the Bessel-Gaussian beam with the spiral phase term of new power-exponent-phase |
| Aotian Wang(王傲天)1,2, Lianghong Yu(於亮红)1,†, Jinfeng Li(李进峰)1, and Xiaoyan Liang(梁晓燕)1,‡ |
1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract A new type of beam called the NPEP-BG (a Bessel-Gaussian (BG) beam with a spiral phase term of a new power-exponent-phase (NPEP)) is theoretically studied in this paper. The results show that the number of singularities of the phase and side lobes of the intensity of this beam were equal to the topological charges (TCs) and the beam has the characteristics of self-healing during propagation. The NPEP-BG beam combined the partial characteristics of the new power-exponent-phase vortex (NPEPV) and the Bessel-Gaussian beam. At the focus of the beam, the characteristic like a perfect vortex beam was present, in which the focal radius is stable and independent of the topological charge. There are multi-focal spots around a ring in the focal plane, meaning that the NPEP-BG beam has a potential for application in multi-particle manipulation.
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Received: 14 November 2022
Revised: 30 December 2022
Accepted manuscript online: 11 January 2023
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PACS:
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42.25.Bs
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(Wave propagation, transmission and absorption)
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| Fund: Project supported by the Program of Shanghai Academic/Technology Research Leader (Grant No. 20SR014501), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB1603), and the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2019247). |
Corresponding Authors:
Lianghong Yu, Xiaoyan Liang
E-mail: lhyu@siom.ac.cn;liangxy@siom.ac.cn
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Cite this article:
Aotian Wang(王傲天), Lianghong Yu(於亮红), Jinfeng Li(李进峰), and Xiaoyan Liang(梁晓燕) Propagation and focusing characteristics of the Bessel-Gaussian beam with the spiral phase term of new power-exponent-phase 2023 Chin. Phys. B 32 044201
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