李长乾,王立英

• 1:天津大学理学院应用物理学系
• 2:天津大学理学院物理市级实验教学示范中心

摘要(Abstract)：

介绍了一种利用光栅的一级衍射光斑光强测量待测液体折射率的方法，简称光栅光强法。阐明了光栅光强法测量液体折射率的实验原理，组建实验装置，测量了水-丙三醇、蛋白-pH10缓冲液两种混合液体的折射率和光栅衍射光强的关系曲线，测量得到的无水乙醇的折射率与理论值的相对误差小，具有实验装置易于搭建、操作简单的特点，在实验教学研究等领域具有一定的研究和应用价值。

关键词(KeyWords)： 光栅衍射;一级衍射光强;液体折射率

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李长乾,王立英

参考文献(References)：

• [1] 孙一书，陈怡，韩冰，等.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.SUN Y S,CHEN Y,HAN B,et al.Precision test technology of liquid refractive index using the method of minimum deviation angle[J].Chinese Optics,2019,12(4):826-832.(in Chinese)
• [2] 陈余行，马振斌.最小偏向角法测量NaCl溶液浓度与折射率[J].实验科学与技术，2010,8(6):16-17,112.CHEN Y H,MA Z B.Research on the refractive index of NaCl solution by minimum angle of deviation[J].Experiment Science and Technology,2010,8(6):16-17,112.(in Chinese)
• [3] 张风昀，隋宏光，凌翠翠.迈克尔孙干涉仪测量液体折射率[J].实验技术与管理，2019,36(3):69-70,75.ZHANG F Y,SUI H G,LING C C.Michelson interferometry for measuring refractive index of liquid[J].Experimental Technology and Management,2019,36(3):69-70,75.(in Chinese)
• [4] 母柏松，马孟祺，陈云琳.利用迈克耳孙干涉仪测量透明体的折射率[J].物理与工程，2015,25(4):51-53,59.MU B S,MA M Q,CHEN Y L.Refractive index of transparency measured by Michelson interferometer[J].Physics and Engineering,2015,25(4):51-53,59.(in Chinese)
• [5] 林春丹，杨冠，焦梦瑶，等.基于迈克耳孙干涉仪及劈尖测量透明液体折射率[J].物理实验，2016,36(8):13-15.LIN C D,YANG G,JIAO M Y,et al.Measurement of transparent liquid refractive index based on Michelson interferometer and glass wedge[J].Physics Experimentation,2016,36(8):13-15.(in Chinese)
• [6] 李丽荣，罗龙，刘艳丽.牛顿环装置的改进并测量液体折射率及现象讨论[J].实验技术与管理，2015,34(10):97-99,104.LI L R,LUO L,LIU Y L.Using improved Newton ring device to measure liquid refractive index and discussing its phenomena[J].Experimental Technology and Management,2015,34(10):97-99,104.(in Chinese)
• [7] 陈代兵，张佳伟，李金玉.利用劈尖的等厚干涉测量液体的折射率[J].大学物理实验，2016,29(5):41-43.CHEN D B,ZHANG J W,LI Y J.Use wedge of equal thickness interference measuring the refractive index of the liquid[J].Physical Experiment of College,2016,29(5):41-43.(in Chinese)
• [8] 李雅倩，付现斌，周坤.CCD分段测量的光学位移测量系统[J].光学精密工程，2011,19(9):2036-2042.LI Y Q,FU X B,ZHOU K.Optical displacement measuring system by CCD segmental measurement[J].Optics and Precision Engineering,2011,19(9):2036-2042.(in Chinese)
• [9] 辛督强，朱民，解延雷.测量液体折射率的几种方法[J].大学物理，2007,26(1):34-37.XIN D Q,ZHU M,XIE Y L.Several measuring methods of the refractive index of liquid[J].College Physics,2007,26(1):34-37.(in Chinese)
• [10] 陆静珠，陈朴深.利用衍射光栅测定液体和固体的折射率[J].湖州师专学报，1991(5):40-42.LU J Z,CHEN P S.The determination of the refractive index of solid and liquid with diffraction grating[J].Journal of Huzhou University,1991(5):40-42.(in Chinese)
• [11] 张静，满小溪.容器壁厚度对光栅衍射法测量液体折射率的影响[J].物理实验，2015,35(4):34-36.ZHANG J,MAN X X.Influence of container thickness on the refractive index of solution in the method of grating diffraction[J].Physics Experimentation,2015,35(4):34-36.(in Chinese)
• [12] 骆敏，郑凯璐，余观夏.基于光栅衍射的液体折射率测量实验[J].实验技术与管理，2020,37(7):83-85.LUO M,ZHENG K L,YU G X.Experimental study of liquid refractive index measurement based on grating diffraction[J].Experimental Technology and Management,2020,37(7):83-85.(in Chinese)
• [13] DURAN-RAMIREZ V M,MARTINEZ-RIOS A,GUERRERO-VIRAMONTES J A,et al.Measurement of the refractive index by using a rectangular cell with a fs-laser engraved diffraction grating inner wall[J].Optics Express,2014,22(24):29899-29906.
• [14] CALIXTO S,PIAZZA V,GONZALEZ S,et al.Liquid refractive index measured through a refractometer based on diffractiongratings[J].Optics Express,2019,27(24):34705-34720.
• [15] GOODMAN J W.Introduction to Fourier Optics[M].2nd Edition,New York:McGraw-Hill,1996.