Results 201 to 210 of about 1,217,682 (246)

Image Reconstruction with Fraunhofer Holograms*

Journal of the Optical Society of America, 1966
The holograms considered are formed from opaque or transparent diffracting objects which are contained in an aperture illuminated with a coherent, collimated, quasimonochromatic beam of light. It has been shown that the intensity distribution in the near-field of the aperture, but in the far-field of the individual objects which are contained in the ...
John B. DeVelis, George B. Parrent, Brian J. Thompson   +2 more
openaire   +1 more source

SOUND HOLOGRAMS AND OPTICAL RECONSTRUCTION

Applied Physics Letters, 1966
A hologram has been made of an object illuminated by ultrasound, using the deformation of the water surface by radiation pressure. An optical reconstruction of this sound hologram with laser light has been achieved.
R. K. Mueller, N. K. Sheridon
openaire   +1 more source

On-line reconstruction of electron holograms

Proceedings, annual meeting, Electron Microscopy Society of America, 1993
Electron-off-axis holography has proven to be a most promising tool for the collection of the complete information about amplitude and phase modulation of the complex electron image wave in one single micrograph. Then amplitude and phase can be reconstructed numerically, offering almost any wave-optical possibility for the evaluation of the electron ...
openaire   +1 more source

Reconstruction of Transmission Holograms in Reflection

Optica Acta: International Journal of Optics, 1974
It is shown that an object wave can be reconstructed from a hologram by reflecting the illuminating wave from it. The image thus formed arises due to the backward coherent scattering from the metallic silver particles in the emulsion.
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Digital hologram recording and stereo reconstruction from a single hologram

SPIE Proceedings, 2013
In this paper we present novel results on the reconstruction of stereoscopic information from a single phase-shift hologram captured using a 2:2 μm pixel-pitch CMOS camera in a holographic interferometer configuration. The low pixel-pitch camera allows the digitizing of holograms with a higher spatial-frequency than what has been reported in the ...
Angelo Arrifano, Marc Antonini, Paulo T. Fiadeiro, Manuela Pereira   +3 more
openaire   +1 more source

Fresnel’s rings in reconstruction of scattering media holograms

Applied Optics, 1995
The theoretical description of the field reconstructed from an in-line hologram of dispersed media is presented. The intensity distribution in the focal plane of a lens placed behind a hologram is analyzed. It is shown that two overlapped patterns are observing in this plane.
A G, Borovoi, V V, Dyomin, N I, Vagin, V A, Donchenko   +3 more
openaire   +2 more sources

Method for reconstructing a hologram using a compact device

Applied Optics, 1992
A compact method for reconstructing a hologram is proposed in which the visible laser diode is used as a light source and the diffractive element is used to generate a collimated beam. The dependence of diffraction efficiency on the polarization of the beam is analyzed and the experiments with hologram reconstruction are reported.
T, Kubota, K, Fujioka, M, Kitagawa
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Reflection hologram for reconstructing deep images:?errata

Optics Letters, 1998
On p. 1725 of Ref. 1, in the 20th line in the righthand column, the printed phrase "two-step time diffraction" should read as "two-step diffraction."
Y, Taketomi, T, Kubota
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Moiré analysis of the reconstruction accuracy and uniformity of holograms

Optics Letters, 1986
A moiré technique for the analysis of the reconstruction accuracy and uniformity of holograms is presented. A Ronchi ruling is recorded holographically, and the image is cast on the object ruling. The superposition of the two rulings forms a moiré pattern that serves for the evaluation of the holograms.
M, Ben-Levi, G, Laufer
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Reconstruction dynamics of recorded holograms in photochromic glass

Applied Optics, 2011
We have investigated the dynamics of the record-erase process of holograms in photochromic glass using continuum Nd:YVO₄ laser radiation (λ=532 nm). A bidimensional microgrid pattern was formed and visualized in photochromic glass, and its diffraction efficiency decay versus time (during reconstruction step) gave us information (D, Δn) about the ...
Mona, Mihailescu, Eugen, Pavel, Vasile B, Nicolae   +2 more
openaire   +2 more sources