PRE-OSH系统中相位调制对全息重建图的影响研究  

Investigation of Phase Modulation in OSH-PRE System

作　　者：万道明[1] 周昕[1] 张罗致[1] 呼有军 

机构地区：[1]四川大学,成都610064

出　　处：《激光杂志》2015年第8期54-57,共4页Laser Journal

摘　　要：在随机相位编码光学扫描系统中(PRE—OSH),加入了随机相位板(液晶空间光调制器)来解决此系统中存在的离焦噪声问题,由于相位调制设备的精度限制(相位调制与加载驱动电压的非线性关系)以及系统中相位板的设计误差,无法达到理想的调制范围(0-2π),相位调制最高达到1.7π,无法生成理想的重建图像。为此,优化这部分的相对恢复算法并且计算模拟实验过程,并且需要分析相应的模拟光学重构图。For the phase of random encoding optical scanning system( PRE-OSH),the random phase plate( liquid crystal spatial light modulator) was added in the system to solve this problem of defocus noise,due to the limited accuracy of the phase modulation device( phase modulation and loading nonlinear relationship between the driving voltage) and the design phase error system board,it can not achieve the desired modulation range( 0-2π),phase modulation up to 1. 7π,can not generate the desired reconstructed image. For this reason,this part of the optimization algorithm and the relative recovery calculation simulation process,and it need to analyze we should complete corresponding analog optical reconstruction of FIG.

关 键 词：全息 光学重构图 相位板 相位调制 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]