Influence of multiple impurity particles in air on light propagation
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摘要: 为了研究空气中杂质颗粒对光传输的影响，采用有限元法分析了有多个杂质微粒同时存在的情况下，颗粒物连接处的光强分布情况，取得了不同颗粒物之间的强度差异数据，并给出了一种解决复杂多杂质微粒存在情况下的通用解决方案。结果表明，对于球体颗粒物杂质，当同时有两个杂质微粒存在时，穿过杂质的微粒呈现出从低到高的趋势，在杂质微粒互相接触的区域光强达到最大值；对于立方体杂质微粒，光强分布呈现出较强的波动特性，且光强强度比球体杂质微粒的光强强度在数量级上多了100倍。该研究模型可移植性强，能推广应用到多个领域，这一结果对后续开展光在气体中传播的理论是有帮助的。Abstract: To study the influence of impurity particles on light propagation in air, a finite element method was used to analyze the distribution of light intensity at the boundary of impurity particles at the presence of multiple impurity particles. The intensity difference data between different particles was acquired. A general solution was provided to solve the problem of complex impurity particles. After theoretical analysis and experimental verification, the results show that, for sphere particles, while there are two impurity particles at the same time, the particles passing through the impurity present a trend from low to high, and the intensity reaches the maximum in the area where the impurity particles are in contact with each other. For cube impurity particles, the intensity distribution exhibits a strong fluctuation property, and the intensity of light is 100 times more than that of sphere impurity particles. The research model has strong portability and can be widely applied to lots of fields. This result is helpful for the subsequent development of light propagation in air.
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Keywords:
- optical communication /
- light scattering /
- finite element method /
- particulate matter
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