Author Affiliations
Abstract
1 College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350108, China
2 Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou 350108, China
3 Key Laboratory of Opto-Electronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou 350108, China
4 Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application, Fujian Normal University, Fuzhou 350108, China
5 National Institute of Metrology, Chaoyang District, Beijing 100029, China
6 Institute of Industrial Science, The University of Tokyo, Meguro-ku, Tokyo 153-8505, Japan
Polarization holography is a newly researched field, that has gained traction with the development of tensor theory. It primarily focuses on the interaction between polarization waves and photosensitive materials. The extraordinary capabilities in modulating the amplitude, phase, and polarization of light have resulted in several new applications, such as holographic storage technology, multichannel polarization multiplexing, vector beams, and optical functional devices. In this paper, fundamental research on polarization holography with linear polarized wave, a component of the theory of polarization holography, has been reviewed. Primarily, the effect of various polarization changes on the linear and nonlinear polarization characteristics of reconstructed wave under continuous exposure and during holographic recording and reconstruction have been focused upon. The polarization modulation realized using these polarization characteristics exhibits unusual functionalities, rendering polarization holography as an attractive research topic in many fields of applications. This paper aims to provide readers with new insights and broaden the application of polarization holography in more scientific and technological research fields.Polarization holography is a newly researched field, that has gained traction with the development of tensor theory. It primarily focuses on the interaction between polarization waves and photosensitive materials. The extraordinary capabilities in modulating the amplitude, phase, and polarization of light have resulted in several new applications, such as holographic storage technology, multichannel polarization multiplexing, vector beams, and optical functional devices. In this paper, fundamental research on polarization holography with linear polarized wave, a component of the theory of polarization holography, has been reviewed. Primarily, the effect of various polarization changes on the linear and nonlinear polarization characteristics of reconstructed wave under continuous exposure and during holographic recording and reconstruction have been focused upon. The polarization modulation realized using these polarization characteristics exhibits unusual functionalities, rendering polarization holography as an attractive research topic in many fields of applications. This paper aims to provide readers with new insights and broaden the application of polarization holography in more scientific and technological research fields.
polarization holography tensor theory polarization modulation linear and nonlinear polarization characteristics Opto-Electronic Science
2022, 1(2): 210009
1 福建师范大学光电与信息工程学院, 信息光子学研究中心, 福建 福州350117
2 福建师范大学医学光电科学与技术教育部重点实验室, 福建省光子技术重点实验室, 福建 福州350117
报道了正交线偏光全息中的正交再现现象。所谓的正交再现,指的是衍射光的偏振态与记录信号光的偏振态是正交的。基于新发展的张量偏光全息理论,分析了正交再现的条件;搭建实验平台,在实验上观察到正交再现现象。通过定量分析与多组实验,可以得出当衍射光实现正交再现时,其功率大小与记录过程中信号光和参考光的干涉夹角有关。实验结果和理论分析结果完全吻合。正交再现现象的发现,有望拓展对偏光全息理论的认知。
全息 偏振态 张量理论 正交再现 激光与光电子学进展
2021, 58(4): 0409001
福建师范大学光电与信息工程学院信息光子学研究中心, 福建 福州 350117
在基于张量的偏光全息理论的基础上,使用偏振方向在入射面内的线偏振光作为记录参考光,记录干涉夹角为90°时,只需满足再现光与记录参考光的偏振方向非相互正交,就可以实现对信号光偏振态的忠实再现,再现光光强受读取参考光偏振态的影响。理论与实验结果证实了这一更宽松条件下对信号光忠实再现的可能性。该结论有助于拓展人们对偏光全息理论的认知,并可依此结论设计和制作出用于改变入射光传播方向的偏振器件。
全息 偏振态 张量理论 忠实再现 光学学报
2020, 40(23): 2309001
1 北京理工大学光电学院光电成像技术与系统教育部重点实验室，北京 100081
2 福建师范大学光电与信息工程学院，信息光子学研究中心，福建 福州 350117
偏光全息术通过记录两束偏振光干涉形成的偏振光栅，可以把偏振光信息存储在偏振敏感材料当中。偏光全息把传统全息术中长期被忽视的光波偏振信息加以利用，在加大了存储容量的同时，也具有了许多独特的性质。本文简要介绍了偏光全息的发展历程，描述了基于张量的偏光全息理论及其一些推论，然后对偏光全息在数据存储领域的应用作了介绍，并做出展望。
光学数据存储 全息存储 偏光全息 张量理论 optical data storage holographic storage polarization holography tensor theory
1 北京理工大学 光电学院 信息光学研究室，北京 100081
2 日本东京大学 生产技术研究所，东京 153-8505
全息是目前一项极具前景的科学技术，即通过信号光和参考光的干涉，在小小的全息图上记录丰富的信息。相比于传统全息仅记录光波的相位、振幅信息，偏光全息可以将额外的偏振信息记录于偏振态敏感材料中。本文从偏光全息材料入手，详细介绍了偏光全息生产过程；同时介绍基于琼斯理论和张量理论的偏光全息原理和研究进展；最后描述了偏光全息在全息存储和纳米光学领域的发展前景。
偏光全息 琼斯理论 张量理论 偏振态 polarization holography Jones theory tensor theory polarization states
1 吉林工程技术师范学院 信息工程学院, 吉林 长春 130052
2 吉林大学 中日联谊医院 神经外科, 吉林 长春 130033
3 东北电力大学 信息工程学院, 吉林 吉林 132012
基于张量理论在高维图像处理中的应用, 提出一种张量模式的稀疏表示方法, 以便有效地去除肺部CT序列图像的噪声, 增强图像的有用信息。首先, 设计了张量模式的正交匹配追踪法(TOMP)来表达稀疏系数; 构建了高维K-奇异值分解法(HOK-SVD)用于字典更新。然后, 对张量乘法的参数进行优化, 即通过构造三维灰度共生矩阵, 建立三维纹理特征与张量乘法模式之间的数学模型。最后, 将这种方法应用于LIDC数据库的150组CT序列图像的预处理, 对各算法的稀疏表示效果进行评价。与当前应用的其他方法相比, 本文提出的高维K-SVD算法的的峰值信噪比提高了1.5%, 平均误差降低了1.2%; 在此预处理基础上进行的图像分割结果表明: 图像的边缘偏移误差下降了3.0%, 体积重叠率提高了1.2%。上述结果显示基于张量的方法可以更精确地完成对三维CT图像序列的稀疏表示。
计算机辅助诊疗 CT图像 稀疏表示 张量理论 灰度共生矩阵 computer-aided diagnosis CT image sparse representation tensor theory gray-level co-occurrence matrix
