Focused-image holography with extended sources.
Focused image holography with extended sources for real image in proximity of hologram plate
HOLOGRAPHY↗
SEARCH · Engineering Papers
Results for “optical techniques”
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.
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A cathode ray tube suitable for viewing under high ambient
Cathode ray tube with nonreciprocal optical filtering techniques for viewing under high ambient
Amberger, D.↗
Investigations of dust in the upper atmosphere by optical radar Final report, 1 Jul. 1966 - 31 Jul. 1968
Upper atmospheric dust investigations using optical radar techniques
Fiocco, G.↗
Measurements of wind speeds with an optical crossbeam system
Optical crossbeam technique for remote sensing of wind speeds, relating light fluctuations to convective wind velocity by space-time correlation methods
Pickelner, D. J.↗
The problems and potential in monitoring pollution from satellites
Satellite monitoring of air pollution, discussing sulfur dioxide measurement in UV, optical correlation techniques, IR and visible spectra, stratospheric balloon tests, etc
Barringer, A. R.↗
The role of optics in research at Ames Research Center
Photo-optical processes and optical measuring techniques in research programs at Ames Research Center for aerodynamics, life sciences and space sciences
Dimeff, J.↗
Quantum efficiencies greater than 50 percent from commercially available photomultipliers
Photomultiplier tubes high quantum efficiency attainment by optical enhancement techniques
Grant, G. R.↗
Development and application of a star-mapping technique to the attitude determination of the spin-stabilized Project Scanner spacecraft
Spin stabilized Project Scanner spacecraft attitude determination by star mapping technique, describing optics, photomultiplier, reticle, electronics and sun shield
Hinton, D. E.↗
Multiple image overlay storage methods
Image quality achievable with optical multiplexing techniques - overlay storage methods
Mueller, P. F.↗
Measurements of atomic order with the field-ion microscope
Near stoichiometric binary alloys atomic ordering parameters quantization by field ion micrography, using direct counting and optical transformation techniques
Hren, J. J.↗
Simultaneous observations of atmospheric turbulence effects on stellar irradiance and phase
Atmospheric turbulence effects on stellar irradiance and phase, discussing electro-optical recording technique and computer generated statistical data
Bufton, J.↗
New strain analysis technique based on thin- film optical measurements
Strain analysis based on thin metallic film optical measurements, determining principal strain directions from wrinkle and microfracture patterns
Williams, J. G.↗
Optical enhancement of sensitivity in laser Doppler velocity systems
Utilization of optical enhancement techniques prevents loss of light by reflections at the photocathode of a photomultiplier and increases signal detection sensitivity.
Grant, G. R.↗
An interim report on remote sensing of environmental pollutants with a Fourier interference spectrometer.
A small Fourier interference spectrometer for sensing environmental pollutants from spacecraft has been developed at the Jet Propulsion Laboratory. The instrument is intended for obtaining high spectral resolution infrared absorption spectra in the 1.2 to 5.5 micron region at speeds sufficiently high for medium altitude orbital satellite surveys. The paper reviews basic details of the instrument servo and infrared detection systems, previously described, as well as recent developments. In particular, the data-handling system, data reduction techniques and optical tolerance problems are discussed. Preliminary results are included.
Schindler, R. A.↗
Strain-biased PLZT input devices /page composers/ for holographic memories and optical data processing.
The features of a new class of transparent ferroelectric ceramic materials, called PLZT, are described. PLZT are shown to have very strong electrooptic properties and memory, and are switched through transparent electrodes when mechanically strained. Because of these properties, they can be used to fabricate two-dimensional page composers for coherent optical systems. Techniques for fabricating such devices are outlined along with preliminary test results. Applications in displays are shown to be also feasible.
Roberts, H. N.↗
An investigation of optical feedback to extend the frequency response of solid-state detector systems
A primary limitation of many solid-state photodetectors used in electro-optical systems such as the facsimile camera is their slow response in converting light intensities into electrical signals. An optical feedback technique is presented which can extend the frequency response of systems that use these detectors by orders of magnitude without significantly degrading their signal-to-noise performance. This technique is analyzed to predict improvement, implemented, and evaluated to verify analytical results.
Katzberg, S. J.↗
The BAPE 2 balloon-borne CO2
The systems and techniques which were utilized in the experiment to establish an air-to-ground CO2 laser heterodyne link are described along with the successes and problems encountered when the heterodyne receiver and laser transmitter package were removed from the controlled environment of the laboratory. Major topics discussed include: existing systems and the underlying principles involved in their operation; experimental techniques and optical alignment methods which were found to be useful; theoretical calculations of signal strengths expected under a variety of test conditions and in actual flight; and the experimental results including problems encountered and their possible solutions.
Degnan, J. J.↗