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 齐鲁工业大学（山东省科学院），山东省科学院激光研究所，山东 济南 250104
2 山东省农产品贮运保鲜技术重点实验室，山东 济南 250103
3 国家农产品现代物流工程技术研究中心，山东 济南 250103
相比传统监测手段，光纤传感器具有灵敏度高、本质绝缘性高、抗电磁干扰能力强等优势，但基于光纤布拉格光栅的湿度传感器易受温度和应力影响，存在湿度测量误差大、稳定性差等问题。针对这些问题，提出了一种单光栅半涂覆温湿度传感器的制备方法。首先，在光栅的一半栅区上涂覆湿敏材料，另外一半栅区为裸光栅。然后，对裸光栅的反射光谱峰值曲线进行高斯拟合，建立环境温度与中心波长λ的函数关系。最后，分析了光栅反射光谱曲线和峰值功率围成的面积S与不同环境湿度的关系，建立面积S与环境相对湿度的函数模型，并采用温湿度发生器对传感器进行测试。实验结果表明，在10%RH~90%RH（%RH为相对湿度）范围内，该传感器具有较好的重复性，湿度监测灵敏度为2.95/%RH，响应时间为6.6 min，满足仓储等行业对温湿度的监测需求，为相关领域的温湿度监测提供了一种新的解决方案。
光栅 温湿度 光谱曲线 高斯拟合 光谱面积 激光与光电子学进展
2022, 59(7): 0705001
卫星图像翻译是生成对抗网络的重要应用场景之一，现有的卫星图像翻译存在生成质量低、泛化能力弱、计算代价高等问题。在循环生成对抗网络的基础上，通过设计轻量化的注意力残差模块来提高图像翻译质量、减小模型的参数计算量，同时引入最小二乘损失来提高训练过程的稳定性。实验结果表明，所提方法在保持高训练稳定性、低模型计算量的前提下，在卫星图像翻译任务中具有较好的翻译质量。
图像处理 循环生成对抗网络 注意力机制 分离卷积 最小二乘损失 激光与光电子学进展
2022, 59(2): 0210017
1 Information Photonics Research Center, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
2 Fujian Provincial Key Laboratory of Photonics Technology, Fuzhou 350117, China
3 Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fuzhou 350117, China
4 Wuhan National Laboratory for Optoelectronics, Wuhan 430074, China
Embedded data are used to retrieve phases quicker with high accuracy in phase-modulated holographic data storage (HDS). We propose a method to design an embedded data distribution using iterations to enhance the intensity of the high-frequency signal in the Fourier spectrum. The proposed method increases the antinoise performance and signal-to-noise ratio (SNR) of the Fourier spectrum distribution, realizing a more efficient phase retrieval. Experiments indicate that the bit error rate (BER) of this method can be reduced by a factor of one after 10 iterations.
holographic data storage (HDS) phase retrieval embedded data high frequency Frontiers of Optoelectronics
2021, 14(4): 529–539
为探究循经间质通道的微观结构, 应用活体激光共聚焦成像系统对大鼠腹内壁腹中线, 即循任脉间质通道荧光素钠聚积部位进行观察。通过使用荧光照相法对尾静脉注射荧光素钠的大鼠腹内壁表面的荧光素钠聚集轨迹定位, 应用活体激光共聚焦成像系统观察腹内壁表面中线荧光素钠聚集轨迹上不同位点与旁开点组织的结构差异, 并同离体组织的Masson染色结果比较。结果发现: 腹内壁中线分布有大量与中线走行平行、有序排列的纤维组织, 其中富含大量组织液; 旁开为致密的肌纤维, 表面的纤维排列不与中线平行。循任脉间质通道具有大量平行纤维结构分布的特征, 为组织液向腹中线汇聚, 并在循任脉间质通道中流动提供了组织形态学基础, 为经络循行和结构的可视化提供了新的方法和证据, 对于经络生物学内涵研究具有重要意义。
活体激光共聚焦成像 间质通道 腹内壁中线 纤维结缔组织 大鼠 in vivo confocal laser imaging interstitial channel midline of inner abdominal wall fibrous connective tissue rat
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
激光衍射对刀是通过检测激光衍射条纹峰值点间距来进行对刀间隙测量的方法。但是检测装置中装夹误差的存在会使得入射激光相对于成像光轴呈现斜入射状态, 进而对对刀间隙检查结果及对刀精度产生影响。为了研究斜入射角度对衍射对刀精度的影响规律, 建立了激光斜入射的衍射光强计算模型和峰值点间距误差的计算模型, 进而给出了激光斜入射角度计算模型; 理论结合实验分别提出了通过检测中央衍射条纹光强峰值点位置和两个一级衍射条纹峰值点间距综合进行激光斜入射角度校正的方法; 根据具体实验工艺条件, 确定了入射激光的最佳倾斜角度工艺调整范围, 为有效提高激光衍射对刀精度提供了依据。
激光衍射 对刀间隙 激光斜入射 倾斜角度 laser diffraction tool-workpiece distance tool setting accuracy oblique incident
激光衍射对刀是通过检测两个一级衍射条纹峰值点的间距来进行对刀间隙测量的一种方法。测量过程中众多工艺参数的调整会对测量结果的精度产生重要影响。由于CCD装夹误差的存在, CCD像面实际安装位置相对于系统理想光轴法平面不可避免地会发生倾斜, 倾斜量的存在会导致检测结果不准确。为了研究CCD倾斜角度对衍射对刀精度的影响, 建立了含有CCD倾斜角度的激光衍射光强模型和一级次极大峰值点间距误差计算模型, 并提出了基于一级次极大峰值点间距的角度校正方法。通过实验确定了CCD像面最佳倾斜角度的工艺调整范围, 为有效提高激光衍射对刀的精度提供了依据。
激光衍射 一级衍射条纹 像面倾斜 laser diffraction first order diffraction stripes CCD CCD image surface tilt
核反应堆系统设计技术重点实验室, 成都 610041
主要介绍了自主化中子时空动力学程序CORCA-K的相关研发进展。CORCA-K程序是中核集团自主研发的NESTOR软件包中的三维瞬态中子学计算软件。其核心功能是采用数值计算方法, 求解三维瞬态中子扩散方程。其空间离散采用第二类边界条件节块格林函数方法, 与三维稳态扩散计算程序CORCA-3D保持自洽性; 时间离散采用对角线隐式龙格库塔格式, 可在向后欧拉格式的基础上叠加实现, 且具备时步自适应功能。以三维LMW基准问题、三维LRA基准问题和秦山核电厂3号机组第5循环为计算对象, 开展了瞬态计算验证。结果表明, CORCA-K计算结果与参考程序符合较好, 且在保证计算精度的条件下, 具有更高的计算效率。
三维 瞬态 龙格库塔 three dimensional dynamic Runge-Kutta CORCA-K CORCA-K NESTOR NESTOR 强激光与粒子束
2017, 29(6): 066003
