THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Arbitrary direction incident Gaussian beam scattering by multispheres |
Li Zheng-Jun(李正军), Wu Zhen-Sen(吴振森)†, Li Huan(李焕), and Li Hai-Ying(李海英) |
School of Science, Xidian University, Xi'an 710071, China |
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Abstract Based on spherical vector wave functions and their coordinate rotation theory, the field of a Gaussian beam in terms of the spherical vector wave functions in an arbitrary unparallel Cartesian coordinate system is expanded. The beam shape coefficient and its convergence property are discussed in detail. Scattering of an arbitrary direction Gaussian beam by multiple homogeneous isotropic spheres is investigated. The effects of beam waist width, sphere separation distance, sphere number, beam centre positioning, and incident angle for a Gaussian beam with two polarization modes incident on various shaped sphere clusters are numerically studied. Moreover, the scattering characteristics of two kinds of shaped red blood cells illuminated by an arbitrary direction incident Gaussian beam with two polarization modes are investigated. Our results are expected to provide useful insights into particle sizing and the measurement of the scattering characteristics of blood corpuscle particles with laser diagnostic techniques.
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Received: 28 June 2010
Revised: 23 February 2011
Accepted manuscript online:
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PACS:
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11.80.La
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(Multiple scattering)
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13.88.+e
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(Polarization in interactions and scattering)
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52.25.Os
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(Emission, absorption, and scattering of electromagnetic radiation ?)
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34.80.Qb
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(Laser-modified scattering)
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Fund: Project supported by the Fundamental Research Funds for the Central Universities of China and National Natural Science
Foundation of China (Grant No. 60771038). |
Cite this article:
Li Zheng-Jun(李正军), Wu Zhen-Sen(吴振森), Li Huan(李焕), and Li Hai-Ying(李海英) Arbitrary direction incident Gaussian beam scattering by multispheres 2011 Chin. Phys. B 20 081101
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