| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Propagation properties and radiation force of circular Airy Gaussian vortex beams in strongly nonlocal nonlinear medium |
| Xinyu Liu(刘欣宇), Chao Sun(孙超), and Dongmei Deng(邓冬梅)† |
| Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510631, China |
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Abstract We study the abruptly autofocusing and autodefocusing properties of the circular Airy Gaussian vortex (CAiGV) beams in strongly nonlocal nonlinear medium for the first time through numerical simulations. The magnitude of topological charges and the position of the vortex could change not only the light spot pattern but also the intensity contrast. Meanwhile, we can change the position of the autofocusing and autodefocusing planes by changing the parameter of the incident beam. Furthermore, we can control the peak intensity contrast through choosing properly the truncation factor. As for the radiation force, we study the gradient and the scattering forces of CAiGV beams on Rayleigh dielectric sphere. Our analyses demonstrate that the radiation force can be enhanced by choosing proper parameters of CAiGV beams.
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Received: 04 August 2020
Revised: 28 October 2020
Accepted manuscript online: 01 December 2020
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PACS:
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42.30.Kq
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(Fourier optics)
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42.25.Dd
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(Wave propagation in random media)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11374108 and 11775083). |
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Corresponding Authors:
†Corresponding author. E-mail: dmdeng@263.net
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Cite this article:
Xinyu Liu(刘欣宇), Chao Sun(孙超), and Dongmei Deng(邓冬梅) Propagation properties and radiation force of circular Airy Gaussian vortex beams in strongly nonlocal nonlinear medium 2021 Chin. Phys. B 30 024202
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