We record two holograms using two different illuminating wavelengths. Subtracting these holograms, the resulting reconstruction is an approximation to the second order Laplacian differentiation of the object wave.
© 2010 OSA
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1970) Diffraction and gratings : Diffractive optics
(110.0110) Imaging systems : Imaging systems
(110.3010) Imaging systems : Image reconstruction techniques
J. P. Ryle, D. Li, and J. T. Sheridan, "Comparison of Laplacian Differential Reconstruction of In-line Holograms Recorded at Two Different Wavelengths and Planes," in Biomedical Optics and 3-D Imaging, OSA Technical Digest (CD) (Optical Society of America, 2010), paper JMA36.
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