The evolution of <i>C</i>-dipole by incoherent superposition beams

CHEN Haitao; LI Ting; GAO Zenghui

doi:10.7510/jgjs.issn.1001-3806.2022.05.019

LASER TECHNOLOGY > 2022 > 46(5): 691-696. > DOI: 10.7510/jgjs.issn.1001-3806.2022.05.019

CHEN Haitao, LI Ting, GAO Zenghui. The evolution of C-dipole by incoherent superposition beams[J]. LASER TECHNOLOGY, 2022, 46(5): 691-696. DOI: 10.7510/jgjs.issn.1001-3806.2022.05.019

Citation:

CHEN Haitao, LI Ting, GAO Zenghui. The evolution of C-dipole by incoherent superposition beams[J]. LASER TECHNOLOGY, 2022, 46(5): 691-696. DOI: 10.7510/jgjs.issn.1001-3806.2022.05.019

Citation:

CHEN Haitao, LI Ting, GAO Zenghui. The evolution of C-dipole by incoherent superposition beams[J]. LASER TECHNOLOGY, 2022, 46(5): 691-696. DOI: 10.7510/jgjs.issn.1001-3806.2022.05.019

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The evolution of C-dipole by incoherent superposition beams

1.
College of Physics and Engineering, Chengdu Normal University, Chengdu 611130, China
2.
Key Laboratory of Computational Physics, Yibin University, Yibin 644000, China

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Received Date: June 20, 2021
Revised Date: August 29, 2021
Published Date: September 24, 2022

Graphical Abstract

Abstract

Abstract

The evolution of the incoherent superposition of two nonparaxial Gaussian beams carried a C-dipole was theoretically and numerically studied. The results show that the position and degree of polarization of two C-points may change with variation of the relevant parameters. The slope of the axis of the C-dipole increases monotonically with propagation. For the case of non-paraxial beams, creation and annihilation of C-dipoles occur as the beams propagate to 0.01z_R and 10.39z_R, respectively. At the plane z=z_R, the creation and annihilation of C-points respectively occurs when the waist width increases to 0.222μm and 0.56μm. Besides, the creation and annihilation of C-points may take place with variation of the off-axis parameter and the wavelength of the host nonparaxial beams. The results would be useful for deeply understanding singular optics and seeking for their potential applications.
- laser physics,
- singular optics,
- polarization singularities,
- C-dipole,
- propagation

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