华南师范大学信息光电子科技学院, 广东 广州 510006
进行了相移合成孔径数字全息的分析与实验研究,分别给出了合成孔径数字全息和相移合成孔径数字全息图的数学表述方法,提出一种用物光场强度图像与多步相移子全息图结合进行相移子孔径数字全息图的合成方法。先以物光场强度图像之间重叠区域的相关运算精确地确定子全息图之间的空间对接位置,在此基础上,再通过相移子全息图之间的重叠区域的相关运算进行相移同步匹配,实现了空间对接匹配与相移同步匹配的分离实施。以2#分辨率板为物体进行了相应的实验研究,子全息图的空间对接匹配的相关系数和相移同步匹配的相关系数均超过了0.99,获得了高质量的再现像,证明了方法的可行性和优点。
光信息处理 数字全息术 合成孔径数字全息术 相移
西安瑞联电子材料有限责任公司, 陕西 西安710065
制作了结构为ITO/2T-NATA (20 nm)/NPB(60 nm)/Zn(BTZ)2∶Ir(DBQ)2(acac) (80 nm)/Alq3(70 nm)/LiF(1 nm)/Al(200 nm)的红光器件,其中2T-NATA是4,4′,4″-tris(N-(2-naphthyl)-N-phenyl-amino)-triphenylamine,NPB是N,N′-di(naphthalen-1-yl)-N,N′-diphenyl-benzidine, Zn(BTZ)2是Bis-(2-(2-hydroxyphenyl) benzothiazole)zinc,Ir(DBQ)2(acac)是iridium complex,Alq3 是tris(8-hydroxyquinolato)aluminum。基于Ir(DBQ)2(acac) 掺杂的Zn(BTZ)2体系的器件给出最高电致发光(EL)性能。结果显示:10%Ir(DBQ)2-(acac) 掺杂Zn(BTZ)2器件的亮度和效率分别为25 000 cd/m2和12 cd/A,其相应的EL峰位于620 nm,色坐标(x=0.63,y=0.37)。由于未使用激子阻挡层,所以,比通常磷光器件的制作工艺简单并且操作过程容易控制。
掺杂 发光效率 OLED OLED Zn(BTZ)2 Zn(BTZ)2 doping luminescent efficiency
Author Affiliations
Abstract
School of Information and Opto-Electronic Science and Engineering, South China Normal University, Guangzhou 510006, China
When an image digital holographic microscopy (DHM) layout is employed, the Fresnel integral cannot be used in separating the reconstructed image from its conjugate image and background. However, combining image plane DHM with the phase-shifting in-line technique, the complex amplitude of reconstructed image can be obtained without using Fresnel integral, moreover the approximate error of reconstruction calculation is easily eliminated and the signal-to-noise ratio of reconstructed image is significantly improved. Since a normal incidence plane wave is used as the reference wave, the difficulty and complexity of phase aberration and phase unwrapping of DHM are remarkably decreased.
数字全息术 像面全息术 相移同轴技术 数字全息显微术 090.2880 Holographic interferometry 180.3170 Interference microscopy 090.1000 Aberration compensation 090.1995 Digital holography Chinese Optics Letters
2009, 7(12): 1076