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应用复源点场理论描述了强聚焦高斯光束，用严格的单粒子光的散射理论，分析了高斯光束对透明球形粒子的力学作用，给出了部分数值计算结果，并且在国内首次完成了用激光束对空气中透明微粒的稳定悬浮实验。实验表明，辐射压力不仅和激光束波长、光腰半径、功率有关，而且和粒子的折射率、半径以及粒子在光束中的位置有关。
The complex point source field theory is used to describe the intensely focused Gaussian beams. The rigorous single-particle scattering theory is used to analyze the mechanics effect of Gaussian beams on the spherical particles. Some numerical results are given and the first time in China, Stable Suspension Experiment of Laser Beam on Transparent Particles in Air. Experiments show that the radiation pressure is not only related to the wavelength of the laser beam, the radius of the waist, and the power, but also to the refractive index, the radius of the particle and the position of the particle in the beam.