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Digital holographic polarimeter using dual reference beam interferometry
Applied Optics, 2021An off-axis digital holographic imaging polarimeter was developed to estimate the Jones matrices of an object. The Jones vector image of the electric field returned from the object is determined from a single holographic recording using the interference between the dual, nearly orthogonal, reference beams.
Matthew A. Goodman +3 more
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Optical Metrology, 2021
In the last 100 years concrete and steel have been the most common building materials, that is the reason why they constitute the core of the structures on which the architecture of the 20th’s century is based.
F. Vincitorio +5 more
semanticscholar +1 more source
In the last 100 years concrete and steel have been the most common building materials, that is the reason why they constitute the core of the structures on which the architecture of the 20th’s century is based.
F. Vincitorio +5 more
semanticscholar +1 more source
Optical Engineering: The Journal of SPIE, 2021
. Due to the development of wearable smart/electronic integrated textiles, the heating compression bandages, conductive fabrics, and electrically heated garments have been extensively used in many fields.
P. Pillai +5 more
semanticscholar +1 more source
. Due to the development of wearable smart/electronic integrated textiles, the heating compression bandages, conductive fabrics, and electrically heated garments have been extensively used in many fields.
P. Pillai +5 more
semanticscholar +1 more source
Sensitivity increase in digital holographic interferometry
SPIE Proceedings, 2008When using the interferometric techniques, the optical path changes induce the wavefront deformations that in turn cause the appearance of fringes. One general characteristic of such an approach is the measurement sensitivity. The actual sensitivity of a holographic interferometer is a function of, on one hand, the parameters of the measuring system ...
Demoli, Nazif +5 more
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Dynamic displacement measurement in digital holographic interferometry using eigenspace analysis.
Applied Optics, 2021Non-contact measurement of displacement undergone by a deformed object is an important application problem in digital holographic interferometry. Such measurements usually demand reliable estimation of interference phase even in the presence of severe ...
J. Ramaiah, Rajshekhar Gannavarpu
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Deformation measurement by digital holographic interferometry
SPIE Proceedings, 2003Deformation measurement of a cantilever based on digital holographic interferometry is presented. The digital holograms of the cantilever before and after deformation are obtained by use of phase-shifting technique. By using the phase-shifting digital holography, the object wave information without zeroth order diffraction wave can be extracted.
Isao Takahashi +4 more
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Displacement Determination by Digital Holographic Interferometry
AIP Conference Proceedings, 2010Digital Holographic Interferometry is a useful technique for measuring the deformation or displacement of the surface of an object by recording at least two speckle patterns, one before and one after the object is deformed. Holographic interferometry utilizes interference between the speckled image of an object illuminated by a laser and a reference ...
Lotfi Abdelhakim +3 more
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Digital Holographic Interferometry (DHI)
2014As we saw in Chap. 2, a conventional holographic interferogram recorded on photographic film is generated by superposition of two waves, which are scattered from an object in two different states of loading or excitation.
Ulf Schnars +3 more
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Digital Holographic Interferometry of Translucent Objects
Biomedical Optics and 3-D Imaging, 2010We use a variation of digital holographic interferometry, viz., an inverse reconstruction method, to determine the 3-D shape and deformation of translucent objects such as water droplets.
G. Nehmetallah +3 more
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Tomographic high-speed digital holographic interferometry
Measurement Science and Technology, 1995A dual-reference beam, plane-wave illumination, holographic interferometry set-up has been developed which can operate in a rapid double-pulse mode and which provides multiple simultaneous views of a compressible flow field. It is intended for the quantitative study of the instantaneous density distribution in a 3D (turbulent) flow field, as well as ...
B Timmerman, D W Watt
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