利用折射光场分析液滴中光传播规律

为了保证液滴分析技术的重复性和可靠性,必须对光在液滴中的传播规律有更为深入的了解.设计并制作了三套不同方位的实验系统,以纯净水作为实验样品.分别拍摄了自液滴中向三个方向的折射光场分布.通过分析折射光线分布,并利用光纤出射光场的实验规律,进一步得出光在液滴中的传播轨迹,解释了光纤液滴指纹图中峰值形成过程.实验结果表明,光纤液滴指纹图中不同的特征峰值所对应的光在液滴中的传播模式是不同的.

Study on Propagation of Light Inside Liquid Drop

To guarantee the consistency and reliability of the fiber drop analysis technique, it is important to understand the propagation of light inside the liquid drop in detail. Three experimental systems in different directions were designed and fabricated. Pure water was chosen as the experimental sample. The light fields of refracted light in three directions from the liquid drops were monitored. Through analyzing the distribution of the refracted light and the experimental law of output light-field from fibers, the transmission traces and the propagation law of the light inside the liquid drops were proposed. The forming process of peaks of fiber fingerprint drop traces (FFDT) was explained. The experimental results show that different peaks of FFDT correspond with different transmission modes of light inside the liquid drop.