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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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High Q Fabry-Perot interferometer for measurement of atmospheric gas losses, particularly water vapor absorption, using coherent light source in 100-300 gc frequency range
Random error estimation for Mach-Zehnder interferometer interference fringe measurements
Automatic control of spacing of Fabry-Perot interferometers to transmit at given wavelength
Tunable birefringent Fabry-Perot interferometer used in study of solar magnetic fields, using Zeeman effect
Michelson interferometer to obtain vertical temperature and humidity profile from Nimbus satellite
Michelson type interferometer for Nimbus meteorological satellite to obtain vertical temperature, humidity and ozone profile
Rotating interferometer measuring spread and coherence ratio of scattered radio wave
Fabry-Perot interferometers with electronic determination of Doppler line widths, discussing effect of hyperfine and isotopic structure
Balloon-borne Michelson interferometer for far IR solar spectrometry
We present the basic elements and first results of an end-to-end simulation package whose purpose is to test the validity of the Space Interferometer Mission design. The fundamental simulation time step is one millisecond, with substructure at 118 ms, and the total duration of the simulation is five years. The end product of a given wide-angle astrometry run is an estimated grid star catalog over the entire sky with an accuracy of about 4 micro-arcseconds.
This paper gives an overview of the control system that has been implemented for the single baseline operation of the Keck Interferometer and indicates how this will be extended to allow control of the future modes of the instrument.
This paper describes the methodology used to align the interferometer optics in the TES cryogenic Fourier Transform Spectrometer.
We discuss the development of the Differential Phase detection technique for the Keck Interferometer Hot Jupiter Key Science Program.
We discuss the development of the Differential Phase detection technique for the Keck Interferometer Hot Jupiter Key Science Program.
Searches for gravitational radiation can be performed in space with two spacecraft tracking each other with coherent laser light. This experimental technique could be implemented with two spacecraft carrying an appropriate optical payload, or with the proposed broad-band, space-based laser interferometer detectors of gravitational waves operated in this non-interferometric mode.
POINTS is a high-precision, high-throughput interferometer intended for astromomy only. It can perform science compatable with astrophysics (AIM) and planet detection (TOPS-1). The spacecraft will be compact, lightweight, and suitable for high Earth orbit. It will employ the minimal number and complexity of mechanisms or deployable parts and be designed for a 10 year mission life.
In this paper we present a method for exactly cancelling the laser noise in a one-bounce unequal-arm Michelson interferometer. The method requries separate measurements of the phase difference in each arm, made by interfering the returning laser light in each arm with the outgoing light.
Mid-infrared nulling is a key observing mode planned for the NASA-funded Keck Interferometer at the Keck Observatory on the summit of Mauna Kea in Hawaii.