Speckle suppression in digital holographic imaging with random phases and different wavelengths

Junmin Leng; Xinzhu Sang; Binbin Yan

doi:10.1117/1.OE.53.3.033105

21 March 2014 Speckle suppression in digital holographic imaging with random phases and different wavelengths

Junmin Leng, Xinzhu Sang, Binbin Yan

Author Affiliations +

Optical Engineering, Vol. 53, Issue 3, 033105 (March 2014). https://doi.org/10.1117/1.OE.53.3.033105

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.

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Junmin Leng, Xinzhu Sang, and Binbin Yan "Speckle suppression in digital holographic imaging with random phases and different wavelengths," Optical Engineering 53(3), 033105 (21 March 2014). https://doi.org/10.1117/1.OE.53.3.033105

Published: 21 March 2014

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