基于PASCO平台的透明材料折射率的测量

doi:10.16854 /j.cnki.1000-0712.170238

大学物理 ›› 2018, Vol. 37 ›› Issue (3): 33-37.doi: 10.16854 /j.cnki.1000-0712.170238

基于PASCO平台的透明材料折射率的测量

金远伟，王娅冰，吴庆春，汪连城，赵斌

1.南京工程学院数理部，江苏南京211167; 2.南京信息工程大学数学与统计学院，江苏南京210044; 3.南京信息工程大学空间天气研究所，江苏南京210044

收稿日期:2017-04-30 修回日期:2017-04-30 出版日期:2018-03-20 发布日期:2018-03-20
作者简介:金远伟( 1990—) ，男，江苏盐城市人，南京工程学院数理部实验师，硕士，主要从事大学物理实验教学
基金资助:
江苏省普通高校研究生科研创新计划项目( KYZZ16_0349) 、国家留学基金、江苏高校青蓝工程资助.

Refractive index measurement of transparent materials based on PASCO platform

JIN Yuan-wei1，WANG Ya-bing2，3，WU Qing-chun1，WANG Lian-cheng1，ZHAO Bin1

1. Department of Mathematics and Physics，Nanjing Institute of Technology，Nanjing，Jiangsu 211167，China; 2. College of Math & Statistics，Nanjing University of Information Science and Technology，Nanjing，Jiangsu 210044，China;3. Institute of Space Weather，Nanjing University of Information Science and Technology，Nanjing，Jiangsu 210044，China

Received:2017-04-30 Revised:2017-04-30 Online:2018-03-20 Published:2018-03-20

摘要/Abstract

摘要： 将迈克耳孙干涉仪和PASCO 实验平台相结合，设计了一种高精度、高效率测量透明材料折射率的方法.首先分析 PASCO 迈克耳孙干涉仪测量材料折射率的原理，然后利用高性能PASCO 传感器和计算机对干涉条纹进行图像采集和数据处理，得到待测透明材料的折射率信息.最后对材料折射率的不确定度进行探究.实验结果表明，旋转角度θ 对折射率的不确定度影响最大，厚度d 次之，干涉条纹计数K 影响最小.PASCO 实验平台配合迈克耳孙干涉仪可以准确、高效的记录干涉条纹在 “吞吐”时光强的变化，降低条纹计数测量的不确定度，从而提高透明材料折射率的计算精度.同时该方法还可用于和透明材料折射率相关的其他特性的测量.

Abstract: Based on the Michelson interferometer and the PASCO experimental platform，a method for the refraction index measurement of transparent materials，with high precision and high efficiency，is described. Firstly，the basic theory of the Michelson interferometer is analyzed. Secondly，the high-performance PASCO sensor and computer are used to capture and process the interference fringes，and the corresponding refractivity is calculated.Finally，the factors affecting the measurement uncertainty are given. The experimental results show that the measurement of the rotation angle θ affects the refractive index precision most，the thickness d does less，and the interference fringes’counting K does the least. The PASCO platform，in combination with the Michelson interferometer， can accurately and efficiently record the change of light intensity during the interference fringe turnover process，and then improve the calculation accuracy of the corresponding refractive index by reducing the uncertainty of the fringe counting. Also，the method can be used for the measurement of other properties related to the refractive index of the transparent materials.

Key words: PASCO platform, Michelson interferometer, laser interference, the refractive index of transparent materials

金远伟，王娅冰，吴庆春，汪连城，赵斌. 基于PASCO平台的透明材料折射率的测量[J]. 大学物理, 2018, 37(3): 33-37.

JIN Yuan-wei1，WANG Ya-bing2，3，WU Qing-chun1，WANG Lian-cheng1，ZHAO Bin1. Refractive index measurement of transparent materials based on PASCO platform[J]. College Physics, 2018, 37(3): 33-37.

基于PASCO平台的透明材料折射率的测量

Refractive index measurement of transparent materials based on PASCO platform

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