CCD损伤状态与“猫眼”回波强度和偏振度为复杂非线性关系，无法单独根据强度或偏振度数值正确评估CCD损伤与否。结合多源信息融合技术与机器学习，利用适合非线性数据分类判别的KNN、K-SVM和PNN三种方法对CCD损伤状态评估方法进行研究。分别进行了近、远距离“猫眼”回波探测实验，以回波强度、偏振度信息和CCD实际损伤信息作为输入数据，分别对三种方法进行了训练，对比了训练的三种方法的评估测试结果，包括评估点的错误数量、错误率及评估时间，发现室外复杂环境时通过选择最优平滑因子 $ \sigma $的PNN方法错误率最低，在考虑实际评估允许时间范围内，PNN方法最适合用于基于“猫眼”回波信息的CCD损伤状态评估应用。

针对在外场实现探测器损伤状态实时探测的需求，研发了光电探测器表面损伤状态偏振成像式探测系统。理论推导了“猫眼”目标回波偏振特性参数DP和回波偏振度DOP的表达式，利用MATLAB软件仿真绘制了表面粗糙度、回波偏振度以及偏振特性的关系曲线；设计了一套同时偏振成像光学系统，开展了671 nm连续激光对电荷耦合器件（CCD）表面损伤状态的实时探测外场实验，编制了基于MATLAB GUI的回波图像可视化实时采集系统，得到了回波图像强度、偏振特性以及光斑尺寸等信息；通过光学显微镜和白光干涉仪对探测器表面损伤处和未损伤处形貌图像分析，发现探测器损伤表面可见硅基底且粗糙度参数Sq值较大；结果表明，仿真结果与实验测试结果具有良好一致性。光电探测器被损伤后，其表面粗糙度增大，回波偏振特性参数DP减小，退偏特性明显，偏振度DOP减小。偏振成像技术可有效对光电探测器表面损伤状态进行实时探测，该研究提供了一种外场条件下实时探测的好方法。

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.

为深入了解金属弹簧波导对太赫兹波的传输效果，对不同螺线间距金属弹簧的太赫兹波传输特性进行了实验研究。实验结果表明，对于线径0.8 mm、外直径12 mm、长14 cm的金属弹簧，在3.5/4.4 mm等较大的螺距下，弹簧波导反而能在较大的带宽下传导太赫兹波，并具有良好的偏振保持能力。3.5/4.4 mm螺距弹簧的太赫兹传输带宽均约为0.9 THz，且在其峰值频率处的传输损耗分别约为0.2 cm⁻¹和0.27 cm⁻¹。此外，金属弹簧能将太赫兹模式束缚在空气芯内传输，而非通过金属螺线导引传输。该研究结果对金属弹簧波导在太赫兹技术中的应用具有一定参考意义。