| 聚焦高斯光束对微粒的俘获效应 |
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| 引用本文： | 杨小丽,王俊波,冯志超.聚焦高斯光束对微粒的俘获效应[J].电子科技大学学报(社会科学版),1996(1). |
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| 作者姓名： | 杨小丽 王俊波 冯志超 |
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| 作者单位： | 电子科技大学应用物理所 |
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| 基金项目： | 国家科委863高科技项目 |
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| 摘 要： | 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。
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| 关 键 词： | 复源点场 辐射压力 激光俘获 光学悬浮 |
Laser Trapping Particles in a Focused Gaussian Beam |
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| Yang Xiaoli,Wang Junbo,FengZhichao.Laser Trapping Particles in a Focused Gaussian Beam[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1996(1). |
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| Authors: | Yang Xiaoli Wang Junbo FengZhichao |
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| Abstract: | Using the complex-source-point spherical wave theory,this peper derives the formulas for the radiation pressure of a focused gaussian beam exerted on a particle.The numerical results of the radiation pressure and their physical interpretations are presented.A sphere located in a strongly focused laser beam is pressured not only in beam axis direction,but also in transverse direction when the sphere in the beam goes away from the beam axis.The experiment on stable optical levitation of transparent spheres in air first in China is completed It is believe that the technique will be widely used in biological technology,materials science,and aerosol. |
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| Keywords: | complex-source-point spherical wave radiation pressure laser trapping opticallevitation |
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