论文部分内容阅读
从光学变换的基本方程出发,分析了变换所需的空间横向调制型全息透镜的相位误差,提出用计算机产生全息图和光学全息相结合的方法产生高精度的二维变换全息透镜.在实验上实现了二维32序的光学沃尔什-哈特曼变换,实验结果与理论计算一致.
二维光学沃尔什—哈特曼变换
【摘 要】
：
从光学变换的基本方程出发,分析了变换所需的空间横向调制型全息透镜的相位误差,提出用计算机产生全息图和光学全息相结合的方法产生高精度的二维变换全息透镜.在实验上实现了二维32序的光学沃尔什-哈特曼变换,实验结果与理论计算一致.
【机 构】
：
中国科学院物理研究所
【出 处】
：
光学学报
【发表日期】
：
1989年9期
其他文献
本文发展了一种用空间非相干光记录象平面的全息图,并采用白光再现的全息显微术.本方法大大抑制了再现象的噪声,改善了全息显微象质,同时不影响象的分辨率.并且可以记录具有深度信息的显微物体.
期刊
A dual-source distributed optical fiber sensor system with combined Raman and Brillouin scatterings is designed for simultaneous temperature and strain measurements. The optimal Raman and Brillouin signals can be separately obtained by adjusting the power
Polymerization of fullerenes is an interesting topic that has been studied for almost three decades. A rich polymeric phase diagram of C60 has been drawn under a variety of pressure P and temperature T conditions. Knowledge of the
期刊
采用磁控溅射法制备了不同厚度的锑基铋掺杂薄膜，用X射线衍射(XRD)和透射电子显微镜(TEM)研究了薄膜结构随厚度的变化。利用椭圆偏振法测定了样品薄膜在近红外波段的光学常数与光学带隙，研究了膜厚对样品薄膜光学常数和光学带隙的影响。结果表明，膜厚从7 nm增加至100 nm时，其结构由非晶态转变为晶态。在950～2200 nm波段，不同厚度薄膜样品的折射率在4.6～8.9范围，消光系数在0.6～5.8范围，光学带隙在0.32～0.16 eV范围。随着膜厚的增加，薄膜的折射率和光学带隙减小，而消光系数升高；光
In this study, time resolved (TR) Monte Carlo (MC) simulation program code was run to generate photon fluencies with increasing time steps. TR MC simulation was performed for ten time series from 4 ps to 52 ps. Generated photon fluencies were transferred
期刊
针对航空、航天、船舶等制造领域大构件形貌测量的大量程、高数据密度、高效率、结构复杂等特点, 研究了一种融合光电扫描全局定位和终端形貌测量技术的大构件高分辨率几何形貌整体测量方法。通过条纹投影摄影测量系统在构件局部表面投射相位条纹, 获取高精度稠密点云, 设计了位姿测量算法, 解决了复杂现场不满足交会条件时无法实现位姿测量的问题, 在室内空间测量定位系统(workshop Measurement Positioning System, wMPS)组建的全局测量网络体系中, 对条纹投影摄影测量系统进行全局定位
Application of particle swarm optimization-based least square support vector machine in quantitative
A particle swarm optimization (PSO)-based least square support vector machine (LS-SVM) method was investigated for quantitative analysis of extraction solution of Yangxinshi tablet using near infrared (NIR) spectroscopy. The usable spectral region (5400–6
Simultaneous clock recovery and demultiplexing of a 320 Gb/s OTDM system using an optoelectronic osc
An improved optoelectronic oscillator scheme for an optical time division multiplexing (OTDM) system based on cascaded Mach–Zehnder modulator (MZM) and polarization modulator (PolM) is experimentally investigated. The system can simultaneously realize clo
脉冲光纤激光器作为当前国内外激光领域研究的热点之一，其应用越来越广泛。介绍了获取纳秒量级脉冲激光输出的两种典型结构，并基于相应原理分析了各自的关键性技术。概括了国内外该方向的研究进展，提出了有待于解决的若干问题，最后对脉冲光纤激光器的应用和发展前景进行展望。