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Ryle, James P.
Preferred name
Ryle, James P.
Official Name
Ryle, James P.
Research Output
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- PublicationComparison of Laplacian differential reconstruction of inline holograms recorded at two different wavelengths and distancesWe 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.
171 - PublicationDual wavelength digital holographic Laplacian reconstructionAccess to the spatial derivatives of an optical wave field can be used to enhance edge detection, focusing, and holographic imaging. It was recently shown that, by using digital holographic techniques, the Laplacian of an object field can be extracted. Here it is demonstrated that equivalent results can be found using two holograms captured at either two distances or with two appropriately related wavelengths. Experimental and numerical results confirming the theoretical analyses are presented. The proposed two-wavelength-based system requires no mechanical repositioning of the object and is shown to provide superior performance.
565Scopus© Citations 18