光镊轴向力与吸收系数等参数的关系研究

STUDY ON THE RELATIONSHIP OF THE AXIAL FORCE AND SOME PARAMETERS

以射线光学模型为基础,对微粒直径远大于激光微束的米氏粒子在考虑对光的吸收时轴向力与光源参数的关系进行了计算,计算结果给出了轴向力与微粒的吸收系数、波长、激光功率等参数的关系,为实验中参数的选择提供了依据.

Based on the theory of geometrical optics,the relationship between the axial force exerted on the microsphere particles in the Mie scattering field and the main parameters of laser is calculated quantitatively when the absorption is considered, the results not only show the relationship between the axial force and some parameters, that include the absorption coefficient of microscopic particles, the laser wave - length, power and so on, but also are useful for choosing parameters in experiments.