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利用偏心球形粒子对任意角度入射有形波束散射的理论,从广义米理论出发,根据电磁场的动量守恒及麦克斯韦张量,推导了任意入射波束对偏心球形粒子辐射俘获力的级数表达式,并以高斯波束为例,就离轴入射有吸收偏心球形粒子时的辐射俘获力进行了数值模拟,讨论了束腰半径、吸收系数、内核的相对大小及位置对俘获情况的影响.
Based on the theory of generalized rice, based on the conservation of momentum and Maxwell’s tensor of the electromagnetic field, the series expression of the radiation trapping force of the eccentric spherical particles by an arbitrary incident beam is deduced by using the theory that the eccentric spherical particles scatter the visible beam at any angle. Gaussian beam is taken as an example to simulate the radiation trapping force when an off-axis incident eccentric spherical particle is absorbed. The effects of beam waist radius, absorption coefficient, the relative size of the core and the position on the capture are discussed.