Measuring refractive indices of a uniaxial crystal by structured light with non-uniform correlation

Lin Rong; Chen Mengyu; Liu Yonglei; Zhang Hui; Gbur Greg; Cai Yangjian; Yu Jiayi

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Measuring refractive indices of a uniaxial crystal by structured light with non-uniform correlation

机译：通过具有非均匀相关性的结构光测量单轴晶体的折射率

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We introduce an effective method for measuring the refractive indices of a uniaxial crystal based on the independent self-focusing property of non-uniformly correlated beams along the x and y directions. We demonstrate how the positions of the independent foci can be changed by adjusting coherence lengths to determine the characteristic coherence lengths of the beams in a uniaxial crystal, and how this information can be used to determine the refractive indices by relating the propagation characteristics of the beam in free space and in the crystal. Furthermore, it is demonstrated that, by choosing a high beam order, one can reduce the measuring error caused by CCD detection precision. These results present an example of how non-uniformly correlated beams can be used for applications in anisotropic materials. (C) 2021 Optical Society of America

机译：本文介绍了一种基于非均匀相关光束在x和y方向的独立自聚焦特性测量单轴晶体折射率的有效方法。我们演示了如何通过调整相干长度来改变独立焦点的位置，以确定单轴晶体中光束的特征相干长度，以及如何通过关联光束在自由空间和晶体中的传播特性来使用这些信息来确定折射率。此外，还表明，通过选择较高的光束阶数，可以减小由CCD检测精度引起的测量误差。这些结果为非均匀相关光束如何应用于各向异性材料提供了一个例子。（2021）美国光学学会

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来源
《Optics Letters》 |2021年第10期|共4页
作者
Lin Rong; Chen Mengyu; Liu Yonglei; Zhang Hui; Gbur Greg; Cai Yangjian; Yu Jiayi;
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作者单位

Shandong Normal Univ Sch Phys &

Elect Shandong Prov Engn &

Tech Ctr Light Manipulat Jinan 250014 Peoples R China;

Shandong Normal Univ Sch Phys &

Elect Shandong Prov Engn &

Tech Ctr Light Manipulat Jinan 250014 Peoples R China;

Shandong Normal Univ Sch Phys &

Elect Shandong Prov Engn &

Tech Ctr Light Manipulat Jinan 250014 Peoples R China;

Shandong Normal Univ Sch Phys &

Elect Shandong Prov Engn &

Tech Ctr Light Manipulat Jinan 250014 Peoples R China;

Univ N Carolina Dept Phys &

Opt Sci Charlotte NC 28223 USA;

Shandong Normal Univ Sch Phys &

Elect Shandong Prov Engn &

Tech Ctr Light Manipulat Jinan 250014 Peoples R China;

Shandong Normal Univ Sch Phys &

Elect Shandong Prov Engn &

Tech Ctr Light Manipulat Jinan 250014 Peoples R China;

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正文语种 eng
中图分类计量学;光学;
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4. A Mach-Zehnder interferometric system for measuring the refractive indices of uniaxial crystals [J] . De Nicola S., Ferraro P., Finizio A., Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter . 2002,第1a3期

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机译：卤素卤素和其他氟化物化合物的物理性质瑞利干涉物折射指数的构建和操作以及某些卤素氟化物和一些氟碳衍生物在蒸汽状态下的摩尔折射率III一些复合氟化物在水溶液中的折光指数和摩尔折射

Measuring refractive indices of a uniaxial crystal by structured light with non-uniform correlation

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