激光衍射法测量液体薄膜厚度的研究

苗润才; 朱峰

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激光衍射法测量液体薄膜厚度的研究

苗润才 , 朱峰

文章导航 > 激光技术 > 2007 > 31(5): 537-539

引用本文:

Citation:

激光衍射法测量液体薄膜厚度的研究

苗润才^1,2,
朱峰^1,3

1.
陕西师范大学物理学与信息技术学院西安 710062;
2.
榆林学院物理系榆林 719000;
3.
西安通信学院基础部西安 710106

作者简介: 苗润才(1957- ),男,教授,博士生导师,主要从事瞬态光学和声光技术研究.E-mail:rcmiao@snnu.edu.cn.

基金项目:
陕西省科技厅科技计划资助项目(2003A-12)
中图分类号: O348.11

Study on thickness measurement for liquid film by means of laser diffraction

MIAO Run-cai^1,2,
ZHU Feng^1,3

1.
Institute of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;
2.
Department of Physics, Yulin College, Yulin 719000, China;
3.
Department of Mathematics and Physics, Xi'an Communication Institute, Xi'an 710106, China
CLC number: O348.11

摘要: 为了测量厚度小于0.5mm不溶性液体薄膜的厚度,采用激光衍射法验证了液体薄膜的色散关系,并根据其机理,建立起一种实时、非接触的测量不溶性液体薄膜厚度的方法,测得了薄膜的厚度。结果表明,实验值与理论十分吻合。
- 衍射光栅 /
- 液体薄膜 /
- 色散关系 /
- 表面波
Abstract: An experimental setup was constructed to measure the thickness less than 0.5mm of the indissoluble liquid film.When the laser falls on the liquid film surface waves,steady and visible diffraction patterns were obtained.Based on laser diffration,the theory of dispersion relations for waves on liquid film surfaces was testified.Subsequently,the thickness of the liquid film was measured carefully.The result shows that the measured thickness corresponded with the actual thickness very wel1.Based on the principle of this experiment,a new method for thickness measurement of indissoluble liquid film is built in a real time and non-contact way.
- diffraction gratings /
- liquid film /
- dispersion relations /
- surface waves

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