The process of aggregation of two colloidal quantum dots in the field of quasiresonant laser radiation is investigated via computer simulation. The cases of either completely deterministic movement of particles or the movement with the account for random forces are considered. The conditions of pair formation are determined in dependence on initial interparticle distance, on laser wavelength, and on their initial orientation with respect to polarization plane of laser radiation. It is shown that despite velocity of thermal motion dominates over the velocity of directional diffusion of quantum dots, the account for random forces weakly influences on the probability of pair formation, the latter being close to results obtained in the deterministic case. The reason for this weak influence of Brownian movement is the resonant increase of electrodynamics attraction force during certain time interval within the laser pulse.

通过计算机仿真研究了准共振激光辐射领域中两个胶体量子点的聚集过程。考虑粒子完全确定性的运动或考虑随机力的运动的情况。成对形成的条件取决于初始粒子间距离，激光波长以及它们相对于激光辐射偏振面的初始方向来确定。结果表明，尽管热运动的速度在量子点的定向扩散速度中占主导地位，但随机力的影响对成对形成的可能性影响很小，后者与确定性情况下的结果接近。