On the theory of the reconstruction of a weak phase-amplitude object from its images, especially in electron microscopy III. Low-dose imaging using oblique illumination

C.H. Slump, H.A. Ferwerda

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Abstract

In this paper we study the statistical properties of the reconstructed object wavefunction of a weak phase-amplitude object from two low-dose image intensity distributions. The images are obtained by successively illuminating the object coherently by plane quasi-monochromatic waves which make different angles with the optical axis. The case is discussed for isoplanatic conditions and one lateral dimension. Explicit expressions of the mean and variance of the reconstructed wave function are presented in terms of the illumination dose. The low spatial frequencies which were hardly retrievable in the method based on two defocused images obtained under axial illumination are accessible in this approach.

Original languageEnglish
Pages (from-to)371-385
Number of pages15
JournalOptica Acta
Volume30
Issue number3
DOIs
Publication statusPublished - 1 Jan 1983
Externally publishedYes

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