An effective method for reducing speckle noise in digital holography  

作　　者：新康 

机构地区：[1]Department of Applied Mechanics,Nanjing University of Science and Technology

出　　处：《Chinese Optics Letters》2008年第2期100-103,共4页中国光学快报（英文版）

基　　金：the National Natural Science Foundation of China under Grant No.10772086

摘　　要：An effective method for reducing the speckle noise in digital holography is proposed in this paper. Different from the methods based on classical filtering technique, it utilizes the multiple holograms which are generated by rotating the illuminating light continuously. The intensity images reconstructed by a series of holograms generated by rotating the illuminating light possess different speckle patterns. Hence by properly averaging the reconstructed intensity fields, the speckle noises can be reduced greatly. Experimental results show that the proposed method is simple and effective to reduce speckle noise in digital holography.An effective method for reducing the speckle noise in digital holography is proposed in this paper. Different from the methods based on classical filtering technique, it utilizes the multiple holograms which are generated by rotating the illuminating light continuously. The intensity images reconstructed by a series of holograms generated by rotating the illuminating light possess different speckle patterns. Hence by properly averaging the reconstructed intensity fields, the speckle noises can be reduced greatly. Experimental results show that the proposed method is simple and effective to reduce speckle noise in digital holography.

关 键 词：HOLOGRAMS LIGHTING SPECKLE 

分 类 号：O438.1[机械工程—光学工程]