High-resolution, wide-field object reconstruction with synthetic aperture Fourier holographic optical microscopy

Hillman, T.R., Gutzler, T., Alexandrov, S.A. and Sampson, David (2009) High-resolution, wide-field object reconstruction with synthetic aperture Fourier holographic optical microscopy Optics Express, 17 (10). pp. 7873-7892.

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Abstract

We utilize synthetic-aperture Fourier holographic microscopy to resolve micrometer-scale microstructure over millimeter-scale fields of view. Multiple holograms are recorded, each registering a different, limited region of the sample object's Fourier spectrum. They are "stitched together" to generate the synthetic aperture. A low-numerical-aperture (NA) objective lens provides the wide field of view, and the additional advantages of a long working distance, no immersion fluids, and an inexpensive, simple optical system. Following the first theoretical treatment of the technique, we present images of a microchip target derived from an annular synthetic aperture (NA = 0.61) whose area is 15 times that due to a single hologram (NA = 0.13); they exhibit a corresponding qualitative improvement. We demonstrate that a high-quality reconstruction may be obtained from a limited sub-region of Fourier space, if the object's structural information is concentrated there.

Item Type:	Article
Divisions :	Faculty of Engineering and Physical Sciences Faculty of Health and Medical Sciences
Authors :	Name Email ORCID Hillman, T.R. Gutzler, T. Alexandrov, S.A. Sampson, David d.sampson@surrey.ac.uk
Date :	2009
DOI :	10.1364/OE.17.007873
Uncontrolled Keywords :	Fourier transforms, Holography, Lenses, Optical systems, Synthetic apertures, High quality reconstruction, Holographic microscopy, Numerical aperture objective lens, Object reconstruction, Structural information, Theoretical treatments, Wide field of view, Working distances, Holograms
Depositing User :	Maria Rodriguez-Marquez
Date Deposited :	11 Jun 2018 07:15
Last Modified :	19 Sep 2018 11:32
URI:	http://epubs.surrey.ac.uk/id/eprint/846883

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