基于光学扫描全息测量相位物体的相位分布  

Measurement of phase distribution for phase object based on optical scanning holography

作　　者：魏亚运 周昕[1] 王梦婷[1] 呼有军 

机构地区：[1]四川大学电子信息学院,成都610065

出　　处：《激光技术》2016年第6期820-824,共5页Laser Technology

摘　　要：为了测量相位物体的相位分布,提出了一种基于光学扫描全息系统测量相位物体相位分布的方法。该方法在原理上与以往传统测量方法有很大不同,它采用相干模式下的光学扫描全息系统,利用一个小孔探测器记录与相位物体的相位信息相关的数据,随后采用反演重建算法得到被测物体的相位分布。此外,对该方法的工作原理及重建效果进行了理论分析和模拟仿真,并分析了在记录和重建阶段所采用的小孔是非理想状态情况下,小孔对物体相位分布测量结果的影响。结果表明,用该方法测量相位物体的相位分布是可行的,并且可以获得很好的效果。In order to measure phase distribution of phase object, a method based on optical scanning holography was proposed. Different from traditional methods greatly, optical scanning holography based on coherent mode was adopted. By using pinhole detector, the phase information of the measured phase object was recorded. And then, the object’ s phase information can be reconstructed by inversion reconstruction algorithm. The working principle and reconstruction result were demonstrated theoretically and simulated numerically. The influence of pinhole on measurements of phase distribution was analyzed in detail, when non-ideal pinhole was used in recording and reconstruction stages. The results show the validity and correctness of the method proposed, and reasonable measuring results have been achieved.

关 键 词：全息 相位分布 光学扫描全息 相位测量 相干模式 

分 类 号：O438.1[机械工程—光学工程]