王永松, 林嘉怡, 巫婕妤, 吴泳波, 唐志列. 基于偏振态颜色编码的晶体应力双折射成像[J]. 华南师范大学学报(自然科学版), 2021, 53(1): 6-15. doi: 10.6054/j.jscnun.2021002
引用本文: 王永松, 林嘉怡, 巫婕妤, 吴泳波, 唐志列. 基于偏振态颜色编码的晶体应力双折射成像[J]. 华南师范大学学报(自然科学版), 2021, 53(1): 6-15. doi: 10.6054/j.jscnun.2021002
WANG Yongsong, LIN Jiayi, WU Jieyu, WU Yongbo, TANG Zhilie. Imaging of Crystal Stress Birefringence Based on Color Coding of Polarization State[J]. Journal of South China Normal University (Natural Science Edition), 2021, 53(1): 6-15. doi: 10.6054/j.jscnun.2021002
Citation: WANG Yongsong, LIN Jiayi, WU Jieyu, WU Yongbo, TANG Zhilie. Imaging of Crystal Stress Birefringence Based on Color Coding of Polarization State[J]. Journal of South China Normal University (Natural Science Edition), 2021, 53(1): 6-15. doi: 10.6054/j.jscnun.2021002

基于偏振态颜色编码的晶体应力双折射成像

Imaging of Crystal Stress Birefringence Based on Color Coding of Polarization State

  • 摘要: 提出了一种基于双线偏振CCD-全Stokes参量测量的偏振态色度成像新方法. 通过分焦面Stokes参量测量与RGB颜色编码相结合,设计并研制了基于双线偏振CCD-全Stokes参量测量的偏振态色度成像系统. 利用该系统,获得了晶体模型应力双折射分布的偏振态色度图像,并与传统的光弹性应力测量法进行了比较,偏振态色度成像法不仅可以较高精度地测量应力双折射率,还可以测量其方向分布. 基于偏振态色度成像法的独特优势,结合共焦显微成像技术,对具有双折射效应的单层Sr2TiSi2O8微晶进行了偏振态色度成像的研究. 结果表明:所提方法能够在一幅图中直观地反映物体的全部特征信息,有效地辨别由于晶体内部结构排列不同而导致的双折射特性差异,还可以通过观察微晶生长过程中双折射特性的变化,获取微晶的生长取向等相关信息. 研究结果为功能型微晶材料生长过程的动力学行为研究提供一种简单、有效的可视化方法.

     

    Abstract: A new method of polarization state chromaticity imaging based on dual linear polarization CCD-full Stokes parameter measurement is proposed. Combining the method of separated focal plane Stokes parameter measurement with RGB color coding, a polarization state chromaticity value imaging system based on dual linear polarization CCD-full Stokes parameter measurement is achieved. Applied to the measurement of the stress birefringence distribution of the crystal model, the system can measure not only the distribution of the stress size but also the distribution of the stress direction. The distribution of polarization state chromaticity of the single-layer anisotropic Sr2TiSi2O8 microcrystals is studied, on this basis, using the confocal microscopy imaging technique. The experimental results show that the proposed method can be used to display all the polarization information of the substance directly in an image, recognize the difference in birefringence of the same material with different internal structures effectively, and observe the changes of the birefringence of crystal growth and determine the crystal growth orientation. This offers a simple and effective visualization method for the dynamic behavior of functional crystal growth.

     

/

返回文章
返回