interferometer

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in·ter·fer·om·e·ter

(in'tĕr-fĕr-om'ĕ-tĕr),
An instrument for measuring minute distances or movements through the interference of light waves thereby produced.
[interfere + G. metron, measure]

interferometer

(ĭn″tĕr-fēr-ŏm′ĕ-tĕr)
An optical device that acts on the interference of two beams of light, permitting examination of the structure of spectral lines. It is also used in examining prisms of lenses for faults.

interferometer

1. Instrument designed to measure the wavelength of light, the refractive index of a medium, as well as the flatness, thickness, the quality of optical surfaces, etc. The interferometer is based on the phenomenon of interference between two coherent beams of light. 2. Name given to several types of clinical maxwellian view system used to measure visual acuity. See clinical maxwellian view system.
References in periodicals archive ?
Year 4: Production of x-ray interferometers and demonstration of their performance
The system integrates a numerically controlled multi-axis stage, a laser interferometer, and a vision system for detecting line position.
In this paper, we propose an interferometric seismometer that is based on a heterodyne laser interferometer and analyze seismic data in the frequency range to estimate epicenter location.
But when the laser is turned off, the condensates expand, and their quantum state reflects the forces they were subjected to," researchers from the Massachusetts Institute of Technology (MIT), who have now created a technique to increase the precision of BEC atom interferometers, explained in a (http://news.mit.edu/2016/technique-could-yield-hyperprecise-gravitational-measurements-1227) statement .
According to Dunn, when this technology is used with Doppler radar, it "could prove very useful as an early warning system." The ring laser interferometer could similarly be used to detect infrasound from hurricanes and volcanoes, and Dunn noted that the research team plans to "continue exploring how ring lasers can help reduce the impact of natural hazards."
Similarly, the Michelson-Morley interferometer measurements Cahill refers to in [1] were not developed to measure the speed of light, c, but to measure relative motion, v to a postulated luminiferous ether.
Again the gates are divided according to the interferometer techniques such as ultra-high nonlinear interferometer (UNI), sagnac interferometer (SI), Michelson interferometer (MI), Mach-Zehnder interferometer (MZI), and delay interferometer (DI) to implement the nonlinearity in SOA.
"This is proof of concept that plasmonic interferometers can be used to detect molecules in low concentrations, using a footprint that is ten times smaller than a human hair," said Domenico Pacifici, assistant professor of engineering and lead author of the study.
The University of Wales Bangor has been able to prepare and demonstrate new interferometer technology thanks to funding worth pounds 35,000 from ELWa's Knowledge Exploitation Fund.
The use of two photodetectors yields an improvement best explained by first considering how the photodetector output signals for single and dual detector interferometers are similar.
Optical interferometers function by using two distinct light paths that are combined to form an interference signal.
Abstract: Traceability of physical length to the SI unit of meter is realized by means of interferometry, and primary interferometers are used at the highest accuracy levels to perform calibration of national gauge block standards.