采用普通投影液晶片的数字全息实验  

Digital holography experiment using a conventional liquid crystal projector

作　　者：李贤芳[1] 田旭[2] 李志扬[2] 

机构地区：[1]武汉理工大学理学院,湖北武汉430079 [2]华中师范大学物理科学与技术学院,湖北武汉430079

出　　处：《物理实验》2014年第2期6-9,15,共5页Physics Experimentation

摘　　要：采用普通液晶投影仪搭建了简易数字全息显示实验系统,并根据惠更斯子光源叠加原理和光路可逆原理给出了液晶片相位调节量计算公式,推导了系统的点扩散函数.实测衍射光斑尺寸与理论计算基本一致,实验表明采用该系统可以方便地获得清晰的小尺寸数字全息图像.A simple digital holography display system using a conventional liquid crystal projector was constructed. The phase modulation formula was derived according to Huygens theorem and path reversibility. An analytic expression for the point spread function of the system was also obtained. The measured size of the light spot when a single point was displayed coincided well with theoretical predication. The experimental results showed that the system could conveniently generate small digital holographic images.

关 键 词：数字全息显示 液晶投影仪 叠加原理 光路可逆 点扩散函数 

分 类 号：O438.1[机械工程—光学工程]