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应用最小偏向角法的液体折射率精密测试

孙一书 陈怡 韩冰 袁理

孙一书, 陈怡, 韩冰, 袁理. 应用最小偏向角法的液体折射率精密测试[J]. 中国光学, 2019, 12(4): 826-832. doi: 10.3788/CO.20191204.0826
引用本文: 孙一书, 陈怡, 韩冰, 袁理. 应用最小偏向角法的液体折射率精密测试[J]. 中国光学, 2019, 12(4): 826-832. doi: 10.3788/CO.20191204.0826
SUN Yi-shu, CHEN Yi, HAN Bing, YUAN Li. Precision test technology of liquid refractive index using the method of minimum deviation angle[J]. Chinese Optics, 2019, 12(4): 826-832. doi: 10.3788/CO.20191204.0826
Citation: SUN Yi-shu, CHEN Yi, HAN Bing, YUAN Li. Precision test technology of liquid refractive index using the method of minimum deviation angle[J]. Chinese Optics, 2019, 12(4): 826-832. doi: 10.3788/CO.20191204.0826

应用最小偏向角法的液体折射率精密测试

doi: 10.3788/CO.20191204.0826
基金项目: 

国家自然科学基金项目 61675198

吉林省科技发展计划项目 20180201061SF

详细信息
    作者简介:

    孙一书(1990-), 男, 吉林长春人, 硕士研究生, 主要从事光学测量方面的研究。E-mail:sunyishu@yeah.net

    陈怡(1977-), 女, 吉林长春人, 博士, 副教授, 2009年于韩国仁荷大学获得博士学位, 主要从事光和物质相互作用方面的研究。E-mail:yichen@jlu.edu.cn

  • 中图分类号: O431;O435

Precision test technology of liquid refractive index using the method of minimum deviation angle

Funds: 

National Natural Science Foundation of China 61675198

Jilin Province Science and Technology Development Plan Project 20180201061SF

More Information
  • 摘要: 本文提出了一种自研盛装器皿以提高液体折射率的测试精度。该器皿由金属框架与等厚玻璃窗口组成,其制造工艺相对简单,减少了透射反射面面型精度及窗口等光程因素带来的系统误差,提高了测试精度。本文采用的测试方法为最小偏向角法。最小偏向角法主要用于固体折射率的测试,较少应用于液体折射率的测试。主要因为需要制作特殊的盛装器皿,制造工艺难度大,难以控制面型精度及透射窗口的等光程,对测试结果造成较大影响。经过理论分析可知,采用本文设计的盛装器皿可以满足10-6数量级的液体折射率测试需求。采用0.2″高精度转台进行实验,耦合器皿带来的系统误差和测试系统的理论测量精度达10-6数量级。对某离子液在546.08 nm特征谱线下实际测量的标准差为1.42×10-6。自研器皿满足液体折射率的精密测试需求。
  • 图  1  最小偏向角法测折射率原理图

    Figure  1.  Schematic diagram of refractive index measurement by method of minimum deviation angle

    图  2  盛装器皿示意图

    Figure  2.  Schematic diagram of the vessel

    图  3  测量光路示意图

    Figure  3.  Schematic diagram of measuring optical path

    图  4  未盛装液体的样块

    Figure  4.  Sample without the liquid

    图  5  盛装液体的样块

    Figure  5.  Sample containing the liquid

    表  1  几种特定温度下空气折射率

    Table  1.   Air refractive indexes at several specific temperatures

    T 15 ℃ 18 ℃ 20 ℃ 22 ℃ 25 ℃
    nr 1.000 277 1 1.000 274 3 1.000 272 4 1.000 271 5 1.000 267 8
    下载: 导出CSV

    表  2  顶角A测试值

    Table  2.   Test value of head angle A

    测试次数 1 2 3 4 5 标准差
    顶角 60.007 20° 60.007 17° 60.007 21° 60.007 20° 60.007 20° 1.37e-5
    下载: 导出CSV

    表  3  某离子液在Hg光谱灯546.08 nm特征谱线下的测试数据

    Table  3.   Test data of ionic liquid under the characteristic line of 546.08 nm of Hg spectrum lamp

    测试次数 1 2 3 4 5 标准差
    折射率值 1.366 802 2 1.366 799 1 1.366 801 5 1.366 801 5 1.366 798 7 1.42e-6
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-12-12
  • 修回日期:  2019-01-18
  • 刊出日期:  2019-08-01

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