4.4 Article

Optical radiation force on a dielectric sphere by a polarized Airy beam

Publisher

Optica Publishing Group
DOI: 10.1364/JOSAA.464812

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Funding

  1. China Postdoctoral Science Foundation
  2. National Natural Science Foundation of China
  3. [2019M653548]
  4. [61901324]
  5. [62001345]
  6. [92052106]

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This study analyzes the optical radiation force exerted on a homogeneous and lossless dielectric spherical particle by a polarized Airy beam using the generalized Lorenz-Mie theory. The transverse and longitudinal radiation force components are evaluated and simulated, showing that a polarized Airy beam can trap and guide the dielectric sphere. The parameters of the Airy beam and the size of the sphere affect the amplitude and distribution of the optical force components.
The optical radiation force acting on a homogeneous and lossless dielectric spherical particle by a polarized Airy beam is analyzed in terms of the generalized Lorenz-Mie theory. The transverse and longitudinal radiation force components are theoretically evaluated and numerically simulated, emphasizing the transverse scale omega 0, attenu-ation parameter gamma, and polarization of the incident Airy beam versus the size parameter ka of the sphere. These results reveal that a polarized Airy beam can trap the dielectric sphere in its main caustic or sidelobes of the beam by the optical transverse force and be guided along the parabolic trajectory of the longitudinal optical force. Moreover, gamma and omega 0 of the Airy beams and ka of the dielectric sphere can affect the amplitude and distribution of the optical force components. This research may be helpful for the development of Airy optical tweezers in applications involv-ing particle manipulation, optical levitation, particle sorting, and other emergent areas. (c) 2022 Optica Publishing Group

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