光学扫描全息系统中提高光电探测系统测量精度的方法  

Method of raising the measuring precision of the optoelectronic detecting system in the optical scnning holography

作　　者：刘守渔[1] 梁万国[2] 谢敬辉[3] 赵达尊[3] 

机构地区：[1]达县师范专科学校物理系,达州市635000 [2]中科院半导体所光电子器件国家工程研究中心,北京100083 [3]北京理工大学光电工程系,北京100081

出　　处：《激光杂志》2000年第6期38-41,共4页Laser Journal

摘　　要：给出了光学扫描全息术的基本原理 ,记录时用实时FZP与物体强度透射率发生卷积从而产生扫描全息图 ,再现时用与记录时相对应的FZP与全息图信号发生卷积即可再现出物体的信息。提出了单光源、双光路的光源补偿光路 ,以消除由于光源的不稳定带来的实验误差。The optical scanning holography is given as the following:at the recording stage,a real time Fresnel zone plate(FZP) is used to scan an object to make the intensity distribution of the FZP convolute with the intensity transmissivity of the object,then a photodetector detects the convolution and converts it to digital data,the holographic information,to be stored in the computer.At the reconstruction stage,another FZP signal generated by the computer convolutes with the stored holographic data,resulting in the reconstructed information of the object at a particular crosssection corresponding to the parameters of the second FZP.In order to eliminate the error caused by the unstablity of the light source,a compensating optical system with a single light source and double light passes is proposed.

关 键 词：光学扫描 全息术 补偿 

分 类 号：TN247[电子电信—物理电子学]