Propagation Characteristics and Self-reconstruction of Radially Polarized Spiral Bessel Beam

Hanqing, 胡汉青 Hu; Fengtie, 吴逢铁 Wu; Run, 胡润 Hu; Yanfei, 杨艳飞 Yang

doi:10.3788/gzxb20194803.0326001

光子学报

2019

DOI: 10.3788/gzxb20194803.0326001

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Propagation Characteristics and Self-reconstruction of Radially Polarized Spiral Bessel Beam

胡汉青 Hu Hanqing¹,

吴逢铁 Wu Fengtie²,

胡润 Hu Run³

et al.

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2024

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Scattering of a Bessel Pincer Light-Sheet Beam on a Charged Particle at Arbitrary Size

Zhang,

Chen,

Wei

et al. 2024

Micromachines

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Electromagnetic scattering is a routine tool for rapid, non-contact characterization of particle media. In previous work, the interaction targets of scattering intensity, scattering efficiency, and extinction efficiency of Bessel pincer light-sheet beams were all aimed at dielectric spheres. However, most particles in nature are charged. Considering the boundary condition on a charged sphere, the beam shape coefficients (BSCs) (pmn,qmn) of the charged spherical particle illuminated by a Bessel pincer light-sheet beam are obtained. The extinction, scattering, and absorption efficiencies are derived under the generalized Lorenz–Mie theory (GLMT) framework. This study reveals the significant differences in scattering characteristics of Bessel pincer light-sheet beams on a charged particle compared to traditional beams. The simulations show a few apparent differences in the far-field scattering intensity and efficiencies between charged and natural spheres under the influence of dimensionless size parameters. As dimensionless parameters increase, the difference between the charged and neutral spheres decreases. The effects of refractive index and beam parameters on scattering, extinction, and absorption coefficients are different but tend to converge with increasing dimensionless parameters. When applied to charged spheres with different refractive indices, the scattering, extinction, and absorption efficiencies of Bessel pincer light-sheet beams change with variations in surface charge. However, once the surface charge reaches saturation, these efficiencies become stable. This study is significant for understanding optical manipulation and super-resolution imaging in single-molecule microbiology.

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Scattering of a Bessel Pincer Light-Sheet Beam on a Charged Particle at Arbitrary Size

Zhang,

Chen,

Wei

et al. 2024

Micromachines

View full text Add to dashboard Cite

show abstract

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Propagation Characteristics and Self-reconstruction of Radially Polarized Spiral Bessel Beam

Cited by 1 publication

References 0 publications

Scattering of a Bessel Pincer Light-Sheet Beam on a Charged Particle at Arbitrary Size

Scattering of a Bessel Pincer Light-Sheet Beam on a Charged Particle at Arbitrary Size

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