Author Affiliations
Abstract
1 School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China
2 Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1547, USA
A novel speckle reduction technique for digital holography is proposed. Multiple off-axis holograms are recorded using a circularly polarized illumination beam and a rotating linearly polarized reference beam. The speckle noise in the reconstructed images is suppressed by averaging these fields. We demonstrate the effectiveness of this technique experimentally and conduct additional statistical evaluation.
数字全息 散斑噪声消除 多幅全息图 偏振态 030.6140 Speckle 090.1995 Digital holography 110.6150 Speckle imaging Chinese Optics Letters
2010, 8(7): 653
Author Affiliations
Abstract
Department of Applied Mechanics, Nanjing University of Science and Technology, Nanjing 210094
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.
数字全息 散斑噪声 多幅全息图 090.0090 Holography 030.0030 Coherence and statistical optics 070.0070 Fourier optics and signal processing 120.0120 Instrumentation, measurement, and metrology Chinese Optics Letters
2008, 6(2): 02100
