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Scattering of an unpolarized Bessel beam by spheres

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【作者】 马秀波李恩邦

【Author】 Xiubo Ma and Enbang Li College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China

【机构】 College of Precision Instrument and Optoelectronics Engineering,Tianjin University

【摘要】 The scattering process of an unpolarized Bessel beam through spherical scatterers is investigated. We derive the analytical solutions of scattered fields of x-and y-polarized Bessel beams using a sphere, after which the dimensionless scattering function for an unpolarized Bessel beam is obtained. The dimensionless scattering function is applicable to spherical scatterers of any size on the beam axis or near it. Through numerical simulations, we demonstrate that extreme points exist in the direction or neighboring direction of the conical angle for spherical scatterers on the beam axis, whereas the existence of extreme points depends on the ratio between the spherical scatterers size and central spot size of the Bessel beam.

【Abstract】 The scattering process of an unpolarized Bessel beam through spherical scatterers is investigated. We derive the analytical solutions of scattered fields of x-and y-polarized Bessel beams using a sphere, after which the dimensionless scattering function for an unpolarized Bessel beam is obtained. The dimensionless scattering function is applicable to spherical scatterers of any size on the beam axis or near it. Through numerical simulations, we demonstrate that extreme points exist in the direction or neighboring direction of the conical angle for spherical scatterers on the beam axis, whereas the existence of extreme points depends on the ratio between the spherical scatterers size and central spot size of the Bessel beam.

【基金】 supported by the National Natural Science Foundation of China (No.60578054);Tian-jin Municipal Science and Technology Commission (No.08JCZDJC19300)
  • 【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2010年12期
  • 【分类号】O436
  • 【被引频次】11
  • 【下载频次】94
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