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Inline holographic microscopy through fiber imaging bundles

Hughes, Michael R (2020) Inline holographic microscopy through fiber imaging bundles. Applied Optics, 60 (4). A1-A7. ISSN 1559-128X. E-ISSN 2155-3165. (doi:10.1364/AO.403805) (KAR id:83241)

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https://dx.doi.org/10.1364/AO.403805

Abstract

Fiber imaging bundles are widely used as thin, passive image conduits for miniaturised and endoscopic microscopy, particularly for confocal fluorescence imaging. Holographic microscopy through fiber bundles is more challenging; phase conjugation approaches are complex and require extensive calibration. This article describes how simple inline holographic microscopy can be performed through an imaging bundle using a partially coherent illumination source from a multimode fiber. The sample is imaged in transmission, with the intensity hologram sampled by the bundle and transmitted to a remote camera. The hologram can then be numerically refocused for volumetric imaging, achieving a resolution of approximately 6 µm over a depth range of 1 mm. The scheme does not require any complex prior calibration and hence is insensitive to bending.

Item Type: Article
DOI/Identification number: 10.1364/AO.403805
Uncontrolled keywords: fibre imaging, holographic microscopy
Subjects: Q Science > QC Physics > QC355 Optics
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Michael Hughes
Date Deposited: 02 Oct 2020 19:28 UTC
Last Modified: 01 Oct 2021 23:00 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/83241 (The current URI for this page, for reference purposes)
Hughes, Michael R: https://orcid.org/0000-0001-5301-2492
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