Journal ArticleDOI
Compensation of the inherent wave front curvature in digital holographic coherent microscopy for quantitative phase-contrast imaging
Pietro Ferraro,Sergio De Nicola,Andrea Finizio,Giuseppe Coppola,Simonetta Grilli,Carlo Magro,Giovanni Pierattini +6 more
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TLDR
An approach is proposed for removing the wavefront curvature introduced by the microscope imaging objective in digital holography, which otherwise hinders the phase contrast imaging at reconstruction planes and it is shown that a correction effect can be obtained at all reconstruction planes.Abstract:
An approach is proposed for removing the wave front curvature introduced by the microscope imaging objective in digital holography, which otherwise hinders the phase contrast imaging at reconstruction planes. The unwanted curvature is compensated by evaluating a correcting wave front at the hologram plane with no need for knowledge of the optical parameters, focal length of the imaging lens, or distances in the setup. Most importantly it is shown that a correction effect can be obtained at all reconstruction planes. Three different methods have been applied to evaluate the correction wave front and the methods are discussed in detail. The proposed approach is demonstrated by applying digital holography as a method of coherent microscopy for imaging amplitude and phase contrast of microstructures.read more
Citations
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Journal ArticleDOI
Subaperture stitching interferometry based on digital holography
TL;DR: The experiments demonstrate the feasibility and effectiveness of the proposed interferometry, which provides a rapid and robust way to measure spherical surfaces with high resolution and precision.
Proceedings ArticleDOI
Holographic method for capillary induced aberration compensation for 3D tomographic measurements of living cells
Julianna Kostencka,Tomasz Kozacki,Arkadiusz Kuś,Michał Dudek,Malgorzata Kujawinska,Björn Kemper +5 more
TL;DR: In this article, a method for numerical correction of phase images captured in a digital holographic microscopy (DHM) setup adapted to tomographic measurement of biological objects is presented, based on a simple concept of the phase subtraction, preceded by an estimation of the aberration profile using areas of a hologram that have not been affected by the object.
Journal ArticleDOI
Full characterization of the photorefractive bright soliton formation process using a digital holographic technique
TL;DR: In this article, an extensive characterization of the photorefractive bright soliton writing process in a lithium niobate crystal is presented, where an interferometric approach based on a digital holographic technique has been used to reconstruct the complex wavefield at the exit face of the crystal.
Journal ArticleDOI
High numerical aperture holographic microscopy reconstruction with extended z range
TL;DR: A holographic microscopy reconstruction method compatible with a high numerical aperture microscope objective (MO) up to NA=1.4 is proposed and near-optimal resolution is obtained over an extended range (±50 μm) of z locations.
Journal ArticleDOI
EUV and Hard X-ray Hartmann Wavefront Sensing for Optical Metrology, Alignment and Phase Imaging.
Ombeline de La Rochefoucauld,Guillaume Dovillaire,Fabrice Harms,Mourad Idir,Lei Huang,Xavier Levecq,Martin Piponnier,Philippe Zeitoun +7 more
TL;DR: In this article, the Hartmann wavefront sensor is used for X-ray source optimization and imaging applications, and the principle of a Hartmann sensor is described and some key parameters to design a high-performance sensor.
References
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Journal ArticleDOI
Phase-shifting digital holography
Ichirou Yamaguchi,Tong Zhang +1 more
TL;DR: A new method is proposed in which the distribution of complex amplitude at a plane is measured by phase-shifting interferometry and then Fresnel transformed by a digital computer, which can reconstruct an arbitrary cross section of a three-dimensional object with higher image quality and a wider viewing angle than from conventional digital holography using an off-axis configuration.
Journal ArticleDOI
Direct recording of holograms by a CCD target and numerical reconstruction.
Ulf Schnars,W. Jüptner +1 more
TL;DR: The principle of recording holograms directly on a CCD target is described and a real image of the object is reconstructed from the digitally sampled hologram by means of numerical methods.
Journal ArticleDOI
Digital holography for quantitative phase-contrast imaging.
TL;DR: A new application of digital holography for phase-contrast imaging and optical metrology and an application to surface profilometry shows excellent agreement with contact-stylus probe measurements.
Journal ArticleDOI
Simultaneous amplitude-contrast and quantitative phase-contrast microscopy by numerical reconstruction of Fresnel off-axis holograms
TL;DR: Off-axis holograms recorded with a magnified image of microscopic objects are numerically reconstructed in amplitude and phase by calculation of scalar diffraction in the Fresnel approximation to show that the transverse resolution is equal to the diffraction limit of the imaging system.
Journal ArticleDOI
Digital recording and numerical reconstruction of holograms
Ulf Schnars,Werner Jüptner +1 more
TL;DR: The principles and major applications of digital recording and numerical reconstruction of holograms (digital holography) are described, which are applied to measure shape and surface deformation of opaque bodies and refractive index fields within transparent media.
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