摘要
本文利用Ｍｉｅ散射理论和量子光学的方法对ＬＤＡ中强激光作用在散射粒子上的光压以及由此产生的粒子速度漂移进行了理论推导，并对在ｑ《１和γ》λ的情形下粒子速度的漂移进行了详细的计算。其结果表明：若入射激光的功率较大、散射粒子的尺度相对于激光波长较小时，光压将对沿入射光轴线方向的速度测量产生不可忽视的系统误差。
Theory of Mie and method of quantum optics were introduced in this paper to discribe the light pressure on the spherical particles coming from the powerful laser sourse in LDA, and the change of the particle velocity was given according to them. The change of the particle velocity was calculated in details in the case of q<<1 and r>>λ. The result is that if the incident laser is more powerful and the dimension of the particle is far smaller than the wave length of the laser, the systematic error of the particle velocity measurement caused by light pressure can not be neglected.
