偏振态显微成像技术用于各向异性晶体生长的研究  

Anisotropic Crystal Growth Investigation Based on Polarization State Microimaging Technology

作　　者：刘超[1] 袁伟丽 唐志列[1,2] Liu Chao1, Yuan Weili1, Tang Zhilie1,2(1 School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, Guangdong 510006, China; 2 Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangzhou Guangdong 510006, Chin)

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006 [2]广东省量子调控工程与材料重点实验室,广东广州510006

出　　处：《激光与光电子学进展》2018年第3期276-280,共5页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61575067)

摘　　要：将偏振态显微成像技术应用于各向异性晶体生长的成像研究。以物体的偏振态作为物理量进行成像,将描述偏振态的3个Stokes参量转换成RGB三基色,实现用RGB的偏振色度值来表征相应的偏振态。在此基础上,利用共焦显微成像系统对物体进行逐点扫描,获得各向异性物体Stokes参量的空间分布,然后通过偏振色度值的分布来表征物体偏振态的空间分布。实验结果表明,偏振态显微成像技术能够直观地反映物体的全部偏振信息,有效地区分两种材料相同但内部结构排列不同的样品,通过观察晶体生长过程中各向异性的变化,为研究晶体的生长过程提供一种新的可视化方法。The polarization state microimaging technology is proposed to apply to the imaging research of anisotropic crystal growth. The polarization state of the object is used as the physical quantity for imaging. Three Stokes parameters describing the polarization state are converted to three basic colors RGB, then the polarized-chromatic value of the RGB can be used to describe the corresponding polarization state. On this basis, using the confocal microscopy imaging system, we scan the object point by point to obtain the spatial distribution of Stokes parameters of the anisotropic object. Then we characterize the space distribution of the polarization state of the object by the distribution of polarized-chromatic value. The experimental results show that using the polarization state microimaging technology, we can obtain intuitively all the polarization information of the substance, distinguish two samples with the same material but different internal structures effectively, and observe the changes of the anisotropic crystal growth. Thus, a new visualization method for the growth of crystals is presented.

关 键 词：成像系统 偏振态成像 偏振色度值 Stokes参量 各向异性晶体 

分 类 号：O436[机械工程—光学工程]