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
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Journal ArticleDOI
Focus plane detection criteria in digital holography microscopy by amplitude analysis
TL;DR: A focus plane determination method that computes the digital refocus distance of an object investigated by digital holographic microscopy working in transmission and it is shown that when the focus distance is reached, the integrated amplitude is minimum for pure amplitude object and maximum for pure phase object.
Journal ArticleDOI
Transport of intensity phase retrieval and computational imaging for partially coherent fields: The phase space perspective
TL;DR: In this paper, a phase-space formulation for the transport of intensity equation (TIE) is presented for analyzing phase retrieval under partially coherent illumination. But the authors do not consider the effect of the partial coherence on phase retrieval.
Journal ArticleDOI
Total aberrations compensation in digital holographic microscopy with a reference conjugated hologram
Tristan Colomb,Jonas Kühn,Florian Charrière,Christian Depeursinge,Pierre Marquet,Nicolas Aspert +5 more
TL;DR: A new method to achieve quantitative phase contrast imaging in Digital Holographic Microscopy that allows to compensate for phase aberrations and image distortion by recording of a single reference hologram is presented.
Journal ArticleDOI
Extended focused image in microscopy by digital Holography.
Pietro Ferraro,Simonetta Grilli,Domenico Alfieri,Sergio De Nicola,Andrea Finizio,Giovanni Pierattini,Bahram Javidi,Giuseppe Coppola,V. Striano +8 more
TL;DR: It is demonstrated that an extended focused image of an object can be obtained through digital holography without any mechanical scanning or special optical components.
Journal Article
Digital decoding of in-line holograms
Levent Onural,Peter D. Scott +1 more
TL;DR: The proposed filter is a truncated series expansion of the inverse of that operator that maps object opacity function to hologram intensity, which is shown to be equivalent to conventional (optical) reconstruction, with successive terms increasingly sup-pressing the twin image.
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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Simultaneous amplitude-contrast and quantitative phase-contrast microscopy by numerical reconstruction of Fresnel off-axis holograms
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