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Resolving Power in Diffraction Microscopy with Special Reference to X-Rays


ROGERS'S1 elementary explanation of Gabor's2 technique for microscopy treats the hologram as a generalized Fresnel zone plate. I have used this idea for deriving a resolution criterion. Two point objects separated by a distance y produce two Fresnel zone patterns at the hologram with centres separated by a distance z, where z = pay/(Paqa), if Pa and qa are the distances from the illuminating point source of wave-length λa to the hologram film and from the film to the object, respectively. The subscript a refers to parameters of the ‘analysis’ while r will refer to the ‘reconstruction’.

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  1. Rogers, G. L., Nature, 166, 237 (1950).

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  2. Gabor, D., Proc. Roy. Soc., A, 197, 454 (1949).

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  3. Myers, jun., Ora E., Amer. J. Phys., 19, 359 (1951).

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BAEZ, A. Resolving Power in Diffraction Microscopy with Special Reference to X-Rays. Nature 169, 963–964 (1952).

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