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 ?
The laser ranging interferometer onboard the Grace-FO satellites--aided by iXblue's optical phase modulators--will be able to better and more efficiently measure and monitor these vital global mass transports.
Year 4: Production of x-ray interferometers and demonstration of their performance
To detect the seismic wave, we use the heterodyne laser interferometer system.
Laser interferometer position measurement systems provide very precise position or distance information [15].
The schematic of the Fabry-Perot interferometer type optical fiber sensor is shown in Figure 1.
Nevertheless, as pointed out, there are fringe-shifts measured in many interferometers and there is De Witte's propagation time delay (which is correlated to sidereal time).
The chirp of the converted signal is used as an advantage byincluding the SOA in an interferometer configuration that converts this XPM into an intensity modulation.
The scanning interferometer used a He-Ne laser with the beam collimating, expanding, splitting, and combining to generate the reference and object light to create interferometer patterns practicably.
It comes with a full white light interferometer for nondestructive measurement.
In comparison with other methods, for higher accuracy and more noise immunity, phase comparison DF system (interferometer) based on the array of antennas is a good choice [1,2].
Each system includes a rugged, sealed 0.5cm-l resolution interferometer equipped with a choice of beamsplitters and detectors.
If so, check out the XL-80 laser interferometer calibration system from Renishaw (www.renishaw.com; Hoffman Estates, IL), which takes readings at 50 kHz, and provides linear measurement speed of up to 4 m/sec.