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Updated: Jul 17, 2026

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
Published on: February 8, 2014
Scanning holographic microscopy with resolution exceeding the Rayleigh limit of the objective by superposition of
Guy Indebetouw1, Yoshitaka Tada, Joseph Rosen
1Department of Physics, Virginia Tech, Blacksburg, Virginia 24061-0435, USA. gindebet@vt.edu
Abstract:
We present what we believe to be a new application of scanning holographic microscopy to superresolution. Spatial resolution exceeding the Rayleigh limit of the objective is obtained by digital coherent addition of the reconstructions of several off-axis Fresnel holograms. Superresolution by holographic superposition and synthetic aperture has a long history, which is briefly reviewed. The method is demonstrated experimentally by combining three off-axis holograms of fluorescent beads showing a transverse resolution gain of nearly a factor of 2.
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