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    Mapping optical path length and image enhancement using quantitative orientation-independent differential interference contrast microscopy

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    J Biomed Opt-17-16006.pdf (5.830Mb)
    Date
    2017-01-06
    Author
    Shribak, Michael  Concept link
    Larkin, Kieran G.  Concept link
    Biggs, David  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/8651
    As published
    https://doi.org/10.1117/1.JBO.22.1.016006
    DOI
    10.1117/1.JBO.22.1.016006
    Abstract
    We describe the principles of using orientation-independent differential interference contrast (OI-DIC) microscopy for mapping optical path length (OPL). Computation of the scalar two-dimensional OPL map is based on an experimentally received map of the OPL gradient vector field. Two methods of contrast enhancement for the OPL image, which reveal hardly visible structures and organelles, are presented. The results obtained can be used for reconstruction of a volume image. We have confirmed that a standard research grade light microscope equipped with the OI-DIC and 100×/1.3 NA objective lens, which was not specially selected for minimum wavefront and polarization aberrations, provides OPL noise level of ∼0.5  nm and lateral resolution if ∼300  nm at a wavelength of 546 nm. The new technology is the next step in the development of the DIC microscopy. It can replace standard DIC prisms on existing commercial microscope systems without modification. This will allow biological researchers that already have microscopy setups to expand the performance of their systems.
    Description
    Author Posting. © Society of Photo Optical Instrumentation Engineers, 2017. This article is posted here by permission of Society of Photo Optical Instrumentation Engineers for personal use, not for redistribution. The definitive version was published in Journal of Biomedical Optics 22 (2017): 016006, doi:10.1117/1.JBO.22.1.016006.
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    • Cellular Dynamics Program
    Suggested Citation
    Journal of Biomedical Optics 22 (2017): 016006
     
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