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Optical Engineering

Speckle suppression in digital holographic imaging with random phases and different wavelengths
Author(s): Junmin Leng; Xinzhu Sang; Binbin Yan
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Paper Abstract

An effective speckle suppression method in digital holography is experimentally demonstrated with a wavelength-tunable coherent light source and a moving diffuser. Multiple off-axis digital holograms with different wavelengths and random phases are obtained. The Fresnel transformation algorithm is used to calculate the diffraction integral in the reconstruction. The speckle noise in the reconstructed images is suppressed by superposing and averaging the intensity of multiple reconstruction images. Experiment results and the parameter evaluation show that the presented method is effective and feasible.

Paper Details

Date Published: 21 March 2014
PDF: 6 pages
Opt. Eng. 53(3) 033105 doi: 10.1117/1.OE.53.3.033105
Published in: Optical Engineering Volume 53, Issue 3
Show Author Affiliations
Junmin Leng, Beijing Information Science & Technology Univ. (China)
Xinzhu Sang, Beijing Univ. of Posts and Telecommunications (China)
Binbin Yan, Beijing Univ. of Posts and Telecommunications (China)

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