Letter | Published:

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

Nature volume 169, pages 963964 (07 June 1952) | Download Citation

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Abstract

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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References

  1. 1.

    , Nature, 166, 237 (1950).

  2. 2.

    , Proc. Roy. Soc., A, 197, 454 (1949).

  3. 3.

    , Amer. J. Phys., 19, 359 (1951).

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Affiliations

  1. Unesco Technical Assistance Mission, Physics Department, University College, Baghdad. Jan. 28.

    • ALBERT V. BAEZ

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DOI

https://doi.org/10.1038/169963b0

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