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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Proceedings ArticleDOI
Evaluation of residual stress in MEMS structures by digital holography
Giuseppe Coppola,Sergio De Nicola,Pietro Ferraro,Andrea Finizio,Simonetta Grilli,Mario Iodice,Carlo Magro,Giovanni Pierattini +7 more
TL;DR: In this paper, a digital holography method was used as a metrological tool for inspection and characterization of MEMS structures, and the efficiency of the digital holographic method was demonstrated measuring out-of-plane deformations due to the intrinsic residual stress.
Book ChapterDOI
Quantitative Phase Contrast in Holographic Microscopy Through the Numerical Manipulation of the Retrieved Wavefronts
Lisa Miccio,Simonetta Grilli,Melania Paturzo,Andrea Finizio,Giuseppe Di Caprio,Giuseppe Coppola,Pietro Ferraro,Roberto Puglisi,Donatella Balduzzi,Andrea Galli +9 more
TL;DR: In this paper, the authors show how digital holography can be efficiently used as a free and noninvasive investigation tool capable of performing quantitative and qualitative mapping of biological samples.
Proceedings ArticleDOI
Structure measurement of phase grating on post-magnification digital micro-holography
TL;DR: In this article, a digital micro-holographic optical system was developed to record the magnified hologram (named post-magnification), which can suppress the quadratic phase aberration introduced by the microobjective (MO) and the wave-front difference between the object wave and reference wave.
Digital Holographic Microscopy
Anthony J. Devaney,Pengyi Guo +1 more
TL;DR: In this article, a synthetic implementation of the Computational Microscopy and employs phase shifting digital holography for phase retrieval is presented. But the work in this paper is focused on the inverse scattering problem.
Proceedings ArticleDOI
Microchannel detection of microfluidic chips with digital holography imaging system
TL;DR: In this article, a digital image plane holographic microscopy method was developed to achieve the quantitative, qualitative, and non-contact phase imaging with the full field, and the complex amplitude of the whole wave field was reconstructed by the angular spectrum method.
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
Digital holography for quantitative phase-contrast imaging.
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