Dr. Yin-Bo Yang Profile

Dr. Yin-Bo Yang

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Proceedings Article | 5 December 2024 Paper

Internal field properties of chiral particles with dual Hermite beams

Yin-Bo Yang, Jing Bai, Wen-Hao Ma, Cheng-Xian Ge, Zhen-Sen Wu

Proceedings Volume 13418, 1341803 (2024) https://doi.org/10.1117/12.3039330

KEYWORDS: Optical spheres, Electric fields, Particles, Laser scattering, Spherical lenses, Electromagnetic scattering, Radio propagation, Superposition, Magnetism, Electromagnetism

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This study investigates the electric field of chiral particle when double Hermite-Gaussian (HG) beam scattering. By combining Mie theory with the method of complex point sources, electric and magnetic fields of HG are obtained in terms of Spherical Vector Wave Function (SVWFs). By employing coordinate rotation theorem, the expansion of a single HG is extended to that of arbitrary incident dual HG. Expanding the electromagnetic fields within various regions of chiral particles using boundary conditions allows for the derivation of scattering coefficients for internal fields of chiral spheres under dual-beam scattering. We conducted numerical simulations of inner electric field and analyzed variations in internal intensity of chiral spheres. The research findings indicate that when beam propagates to the sphere at different angles, the maximum value of electric field according to vector superposition of two beams. Moreover, when dual Hermite-Gaussian beams propagate in opposite directions, the distribution of the total internal electric field exhibits high symmetry. As the chirality parameter increases, the internal electric field within the chiral particles first increases and then decreases. These research findings will provide valuable insights for the development of chiral particle identification techniques and the application of dual-beam optical manipulation techniques.

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