铌酸锂晶体光学电场传感器为全介质结构，具有宽带宽、对被测电场干扰小的优点，但其灵敏度较低。因此，分析了晶体几何尺寸对传感器灵敏度的影响机理，得出通过增加沿外加电场方向的晶体尺寸同时减少晶体横截面上沿外加电场垂直方向的晶体尺寸来提高传感器的灵敏度。使用COMSOL仿真分析了铌酸锂晶体不同厚度、宽度、长度对晶体内部电场强度的影响，得出晶体厚度从15 mm减小到3 mm和宽度从3 mm增加到22 mm时，晶体内部电场强度分别提高约5.1倍和12.3倍；晶体长度从15 mm变化到55 mm时，晶体内部的电场强度变化仅约为5%。设计并研制出晶体尺寸分别为3 mm×3 mm×42.2 mm (x×y×z)，3 mm×6 mm×42.2 mm (x×y×z)，6 mm×6 mm×42.2 mm(x×y×z)的三只铌酸锂晶体电场传感器，并搭建工频电场测试平台，测试得出三只电场传感器的灵敏度分别为0.243 mV/(kV·m⁻¹)、0.758 mV/(kV·m⁻¹)、0.150 mV/(kV·m⁻¹)。当晶体厚度和长度一定且晶体宽度从3 mm增加到6 mm时，传感器灵敏度提高3倍。当晶体宽度和长度一定且晶体厚度从6 mm减小到3 mm时，传感器灵敏度提高5倍。结合仿真与实验结果得出：在晶体长度一定时，可以通过设计使用宽度更宽、厚度更薄的晶体，研制出高灵敏度的电场传感器。

偏光全息拥有记录振幅、相位和偏振信息的能力，在数据存储、偏振光成像等领域具有重要的应用前景。除此之外，它也具备光场调控方面的能力，可以调控具有螺旋相位分布和空间偏振分布等特殊光场，这类特殊光场在光通信、粒子操纵及光子纠缠等领域有广泛的应用前景，目前也有很多研究聚焦于如何生成这类光束。本文介绍了利用偏光全息制备矢量光束、标量涡旋光束和矢量涡旋光束的最新研究进展。基于偏光全息进行光场调控的方法，具有制备过程操作简单、光学系统体积小、制作成本低的优势，为特殊光场制造提供新的思路。

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.

In the era of information explosion, the demand of data storage is increased dramatically. Holographic data storage technology is one of the most promising next-generation data storage technologies due to its high storage density, fast data transfer rate, long data life time and less energy consumption. Collinear holographic data storage technology is the typical solution of the holographic data storage technology which owns a more compact, compatible and practical system. This paper gives a brief review of holographic data storage, introduces collinear holographic data storage technology and discusses phase modulation technology being used in the holographic data storage system to achieve higher storage density and higher data transfer rate.