干涉波前的恢复技术  

A Wave front Reconstruction Technique

作　　者：吴东楼 贺安之[1] 

机构地区：[1]南京理工大学应用物理系

出　　处：《中国激光》1999年第7期645-648,共4页Chinese Journal of Lasers

摘　　要：提出了相位展开方法，用单张干涉图实现干涉波前的恢复，获取相位物体的相位差信息，并将其应用于重建波面经过温度场引起的相位变化，且与条纹跟追方法比较，获得了良好的效果。The major methods of wave front reconstruction are fringe tracing and phase shifting. The defaults exist in the two methods. The fringe tracing method acquires the prior distribution characteristics of the field to reconstruct the whole wave front. The phase shifting method needs more than three interferograms on the same view angle. In this paper, a phase unwrapping method is applied to reconstruct the wave front basing on one interferogram. The method used in coherence measurement is based on Furrier transform. The reconstruction result is compared to the result acquired with the fringe tracing method.

关 键 词：相位展开 条纹跟追 相移 干涉 波前恢复技术 

分 类 号：TH744.3[机械工程—光学工程]