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XIV.—Experiments in Diffraction Microscopy*

Published online by Cambridge University Press:  14 February 2012

G. L. Rogers
Affiliation:
Department of Physics, University College, Dundee, Angus.

Synopsis

Experiments have been performed, using purely optical methods, to verify and extend the theory of Gabor's diffraction microscope. An elementary theory of the process is first given, from which certain generalizations are provisionally drawn. In particular, a focal length is attributed to any Fresnel diffraction pattern and the hologram derived from it by photography. The variation of this focal length with wavelength and scale factor is postulated by analogy with a zone-plate, and the power-rate for a hologram is denned. These deductions are then verified by experiment, and a summary is given at the end of § 10. Various other confirmatory experiments are then described.

Adequate information is given about apparatus and technique to enable new entrants into this field to obtain satisfactory results with the minimum of preliminary trial.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1952

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References

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