Focusing hologram diffraction grating.
Interferometer producing focusing hologram diffraction grating, noting photograph of spectrum
SPECTROGRAPHY↗
SEARCH · Search NASA
Results for “holograms”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Film plane holograms without external source reference beams.
Three-dimensional film plane hologram recording of object without external source reference beams
PHOTOGRAPHIC RECORDING↗
Improvement in recording and reading holograms
Three-beam technique superimposes a number of patterns in the same plane of a hologram and then uniquely identifies each pattern by a suitable readout process. The developed readout process does not require any movement of parts.
Hallock, J. N.↗
Producing holograms of reacting sprays in liquid propellant rocket engines, phase 1 Interim report, 1 Aug. 1967 - 7 Feb. 1968
Pulsed ruby laser holograms of reacting liquid propellant sprays
Matthews, B. J.↗
Producing holograms of reacting sprays in liquid propellant rocket engines, phase 2 Interim report, 3 Apr. - 2 May 1968
Pulsed ruby laser holograms of hypergolic rocket propellants combustion processes
Matthews, B. J.↗
Producing holograms of reacting sprays in liquid propellant rocket engines Final report
Holograms and laser-illuminated photography of reacting sprays in liquid propellant rocket engines
Briones, R. A.↗
A technique for obtaining a nonpseudoscopic real image from holograms.
Nonpseudoscopic real images from holograms by projecting virtual image
Devaney, A. J.↗
An integral transform for analytical manipulation of holograms.
Integral transformations of static field over aperture to field over planar region for analytical manipulation of holograms
Baron, S.↗
Applications of holograms as displays.
Holograms as displays, discussing mathematical apparatus of application in training devices, cockpit displays and static displays
Hildebrand, B. P.↗
Three-dimensional images exhibiting a Gray scale from binary computer generated Fresnel holograms.
Binary Fresnel holograms synthesized by digital computer using method permitting reproduction of image gray scale
Ballard, G. S.↗
Feasibility Study of Velocity Synchronized Fourier Transform Hologram Camera System
Velocity synchronized Fourier transform hologram camera system
Dyes, W. A.↗
Analysis of holograms of reacting sprays Final report
Holograms of reacting and nonreacting droplet sprays for data reduction
Heckert, B. J.↗
Velocity synchronized Fourier transform hologram camera system
Velocity synchronized Fourier transform hologram camera system for recording hypervelocity particles
Dyes, W. A.↗
Velocity synchronized Fourier transform hologram camera system
Hologram camera system recording hypervelocity particles by velocity synchronized Fourier transform method, employing interferometer
Dyes, W. A.↗
Recording and reconstructing focused image holograms Patent
Recording and reconstructing focused image holograms
Rosen, L.↗
Method and means for recording and reconstructing holograms without use of a reference beam Patent
Method and means for recording and reconstructing holograms without use of reference beam
Rosen, L.↗
Optically erasable and rewritable solid-state holograms.
Optical holographic storage in single-crystal LiNbO3 is described which can be optically erased at room temperature and then rewritten with no degradation in efficiency or writing rate. The diffraction efficiencies associated with the process are about 0.0001. Some variations from previously obtained results include a lack of threshold power density for writing, very-long-term persistence of the stored hologram, and a lack of a dependence of the diffracted intensity on the polarization of the readout beam.
Gaylord, T. K.↗
Pulsed writing of solid state holograms.
The pulsed writing of volume holograms in lithium niobate is reported, both with 200-nsec and 20-nsec duration pulses. This information is of particular interest in high capacity information storage applications since it indicates that writing times at least as short as 20-nsec are readily possible. A series of pulses was used in each case, and the diffraction efficiency was monitored using a He-Ne laser operating at 6328 A and aligned to its corresponding Bragg angle.
Gaylord, T. K.↗