21 March 2014 Speckle suppression in digital holographic imaging with random phases and different wavelengths
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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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Junmin Leng, Junmin Leng, Xinzhu Sang, Xinzhu Sang, Binbin Yan, 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 . Submission:
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