
	Where results make sense

Topic: Interferometer

Related Topics

Sagnac interferometer

Coherence (physics)

Interference

Very Long Baseline Interferometry

Beam splitter

Radio astronomy

Aperture synthesis

Phase (waves)

Speed of light

Ring laser gyro

Monochromatic

Martin Ryle

Albert Abraham Michelson

Wave

Photolithography

	Search Results \| Explore \| Physics.org
		Introduction to the concept of gravitational waves as predicted by Einstein's General Theory of Relativity and the research surrounding...
		colour, diffraction, fibre, fraunhofer, fresnel, interferometer, laser, lens, multimedia, optics, polarization, prism, reflection, refraction,
		This interferometer makes use of multiple reflections between two closely spaced partially silvered surfaces.
	www.physics.org /results/search.asp?q=interferometer&uu=0 (186 words)

	INTERFEROMETER
		The Interferometer included with the system is low cost, small footprint, and easy to use.
		It is a 10x interferometer non-contact optical profiler that uses phase-shifting interferometric technology combined with an optical microscope to provide a non-contact 3D method of measuring the roughness of surfaces from the sub-nanometer to the micron scale.
		Areas in scale from microns to millimeters may be imaged rapidly.
	www.c-kengineering.com /CONTENT/interferometer.html (206 words)

	Interferometer (Site not responding. Last check: )
		An interferometer consists of two or more separate telescopes that combine their signals almost as if they were coming from separate portions of a telescope as big as the two telescopes are apart.
		The resolution of an interferometer approaches that of a telescope of diameter equal to the largest separation between its individual elements (telescopes).
		However, not as many photons are collected by the interferometer as would be by a giant single telescope of that size.
	astrosun2.astro.cornell.edu /academics/courses/astro201/interferometer.htm (76 words)

	Aerotech\| Engineering Reference Laser Interferometer Implementation
		These beams are steered to the interferometer optics and plane mirrors prior to their measurement at a remote detector.
		Interfacing to both the interferometer board and motion controller requires an in-depth knowledge of both devices that is often impractical for most users.
		Aerotech LZR series laser interferometer output signals are standard A-quad-B, and are electrically identical to the output of a traditional incremental encoder.
	www.aerotech.com /products/engref/intexe2.html (738 words)

	PLX Inc. - Monolithic Interferometer
		The revolutionary new PLX Monolithic Interferometer combines all of the optical elements of a high-resolution Michelson Interferometer assembly into a single, extremely stable, monolithic unit.
		Designed primarily for OEM applications, the PLX Monolithic Interferometer never needs to be adjusted once installed in a system - a major advantage over traditional screw-mounted interferometer assemblies.
		The new PLX Monolithic Interferometer features a double pass broad-band configuration with one hollow retroreflector for high-resolution applications, such as UV and near-IR FT spectroscopy.
	www.plxinc.com /pages/monolithic-interferometer.php (188 words)

	SPACE.com -- Interferometry 101: How light is combined from multiple telescopes
		The author was an operator of the Navy's Mark III interferometer, which was dismantled on Mount Wilson three years ago.
		The terms "interferometry'' and "interferometer'' are both derived from the word interference.
		One well-known basic design for an interferometer is the Michelson interferometer, invented by the American physicist, Albert Michelson (1853-1931), famous for the Michelson-Morely Experiment which supports the Theory of Relativity by Einstein.
	www.space.com /scienceastronomy/astronomy/interferometry_101.html (1215 words)

	Fabry-Perot Type Interferometer (Site not responding. Last check: )
		Interferometers are used both to measure distances in terms of wavelengths and to determine wavelengths of particular light sources.
		This interferometer was used by Irwin G. Priest for measuring the wavelength of neon light in 1912 --the first precision measurement of wavelengths published by NBS.
		By counting the number of dark fringes observed as the interferometer's slide advanced the moving mirror, the wavelength of the light became the "scale" to determine how far the slide had moved.
	museum.nist.gov /object.asp?ObjID=47 (461 words)

	Canon Technology -Laser Interferometer-
		Using a semiconductor laser as the light source, this device employs a noncontact method to measure slight displacements and vibrations on the object’s mirror reflection.
		The Michelson Interferometer method has been adopted for the first time in a sensor that measures displacement and vibration, allowing ultra-high resolution of 0.08 nm.
		This dramatic size reduction enables the interferometer to also be used for waferstage position control in steppers and surface measurement of silicon wafers.
	www.canon.com /technology/canon_tech/explanation/compact_interferometer.html (180 words)

	Common path interferometer - Patent 4142797
		The common path interferometer set forth in claim 1 wherein said optical means comprises a second roof mirror, said drive means being coupled to said second roof mirror for pivoting said second roof mirror about its ridge line in a direction opposite to the pivoting of said first roof mirror.
		The mirror in one arm of the interferometer must move perfectly parallel to itself and its position at any point with respect to the output interferogram must be known to a precision better than a wavelength of light in order to recover the spectrum.
		This is exactly the requirement for an interferometer, where the only non-common path occurs within the optical elements 13 and 20, and since the thickness of these elements is the same, the absolute delay depends upon the angle of rotation of the roof mirror 15.
	www.freepatentsonline.com /4142797.html (3134 words)

	The Michelson Interferometer
		The Michelson interferometer of this practical is built from standard optical and optomechanical components on an optical breadboard (60 cm x 90 cm).
		The interferometer provides an introduction to the elementary tools which are present in every optics laboratory, and to the basic tricks used in optical alignment.
		The students build a fully functional Fourier transform spectrometer based on the Michelson interferometer: A light source is coupled into the interferometer and its interference signal is monitored while the length of one arm of the interferometer is varied using a motorized translation stage.
	www.monos.leidenuniv.nl /students/michelson.htm (549 words)

	Heterodyne interferometer arrangement - Patent 5331400
		The heterodyne interferometer arrangement as a whole is indicated by reference numeral 1 and includes a light source LS for generating light beams E.sub.1, E.sub.2 having a first frequency f.sub.1 and a second frequency f.sub.2.
		This object is achieved by a heterodyne interferometer arrangement according to one embodiment of the invention and by a heterodyne interferometric metering method in accordance with the invention.
		The zero passages of the phase output PO of the reference interferometer A furnish equidistant subdivisions for the displacement or variation in length of the interferometer B to be examined.
	www.freepatentsonline.com /5331400.html (4040 words)

	Infrared Interferometer Spectrometer
		The Mariner 9 infrared interferometer spectrometer (IRIS) experiment was designed to provide information on the vertical structure, composition, and dynamics of the atmosphere and on the emissive properties of the surface of Mars.
		From this mirror, the radiation was reflected to the interferometer through the entrance window, which acted as an IR filter and had an effective aperture area of 10 sq cm.
		The instrument was identical in all critical areas to the interferometers designed for the Nimbus-B and -D meteorological satellites, except that the Mariner 9 IRIS had better spectral resolution.
	library.thinkquest.org /19455/infrared_interferometer_spectrom.htm (267 words)

	The Michelson Interferometer
		The Michelson interferometer is often introduced in the context of special relativity where its historic role in providing evidence against the existence of an absolute rest frame defined by the electromagnetic ether is emphasized.
		Michelson's optical inventions have had enduring value and his interferometer in particular has become an indispensable tool in scientific applications such as high resolution spectroscopy and atomic length standards, and in technical applications, where displacements as small as a fraction of the wavelength of visible light must be measured.
		The interferometer you have assembled is typical of a configuration called a wavemeter that is used in modern laser laboratories to measure the wavelength of a laser light source with high precision and high accuracy.
	community.middlebury.edu /~PHManual/michelson.html (3581 words)

	Interferometer - incredibly simple shearing fold type - P Smith
		This is the case with a normal shearing interferometer where a single bright spot forms from a perfectly spherical mirror.
		In the case of a normal shearing interferometer this is done with auxiliary optics which will not be discussed here.
		Other interferometers may be better but this comes at the expense of cost, stabilty and complexity.
	www.users.bigpond.com /pjifl/page15.html (2869 words)

	20-MHz interferometer
		The equipment behind modern scientific radio interferometers, such as the Compact Array at Narrabri, is a challenge even for experts to understand.
		The interferometer has proved suitable for detecting a number of astronomical radio sources, including the Galactic plane, Centaurus A and the Sun.
		The quiet Sun is too weak for our interferometer to detect, however during periods of solar activity the Sun can become the brightest object in the 20-MHz sky.
	www.atnf.csiro.au /news/newsletter/oct02/simple.htm (799 words)

	Michelson Interferometer
		Historically, the most notable use of the Michelson interferometer was an experiment preformed by Michelson and Edward Morley in 1887 to measure the absolute velocity of the Earth through the ether.
		One arm of the interferometer is aligned parallel to the motion of the earth through space (and therefore the ether), so the second arm is perpendicular to the motion.
		The interferometer is cart mounted and raised on a wooden block so that the laser, which sits on an optics rail also on the cart, can be the right height for the mirror array.
	www.fas.harvard.edu /~scdiroff/lds/LightOptics/MichelsonInterferometer/MichelsonInterferometer.html (591 words)

	Fabry-Perot Interferometer (Site not responding. Last check: )
		An interferometer is an instrument for making precise measurements for beams of light of such factors as length, surface irregularities, and index of refraction.
		In astronomy, interferometers are used to measure the distances between stars and the diameters of stars.
		Michelson also developed the stellar interferometer, capable of measuring the diameters of stars in terms of the angle, as small as 0.01" of an arc, subtended by the extreme points of the star at the point of observation.
	www.physics.metu.edu.tr /~mdogruel/pro443.htm (1816 words)

	Successful Interferometer
		An essential step in establishing the viability of x-ray interferometry as a discipline for astronomy is the demonstration of a practical x-ray interferometer.
		The interferometer must not only create fringes, but be of a design class that can be developed into an efficient system for astronomy.
		Because of the extreme inefficiency of Bragg crystals, this class of interferometer would be incapable of observing faint celestial sources.
	casa.colorado.edu /~wcash/interf/cuxi/FringeWriteup.html (1079 words)

	The NIST Length Scale Interferometer
		A static interferometer is defined as one where none of the optical components are intended to move during a measurement and the interference pattern is stationary.
		A dynamic interferometer is one where an optical component, usually a retroreflector, moves and the displacement of the moving element is measured by interference fringe counting or its equivalent.
		One remote interferometer and the microscope are attached to opposite ends of a 1075 mm rigid steel tubeand this assembly is mounted over the waybed on a three point kinematic support.
	nvl.nist.gov /pub/nistpubs/jres/104/3/html/j43bee.htm (11383 words)

	Melles Griot Optics Guide -Interferometer Measurements (Site not responding. Last check: )
		The reference wavefront is reflected back to the interferometer, and the test wavefront is transmitted through the surfaces to the test element.
		When the test wavefront is reflected back to the interferometer, either from the surface being tested or from another l/20 reference surface, the reference and test wavefronts recombine at the interferometer.
		The interferometer has a zoom feature to increase resolution of the optic under test.
	www.mellesgriot.com /products/optics/os_2_1.htm (605 words)

	Randtron Antenna Systems Interferometer Antennas
		Our interferometer expertise has been achieved from fully developed systems such as ESM antenna arrays for the B-2, A-12 leading edge, and other programs using both spiral and sinuous elements.
		The length of the interferometer array is determined by the accuracy of the AOA requirement and the phase resolution measurement receiver.
		Interferometer elements are single polarization spiral antennas, or simultaneously dual polarized sinuous antennas.
	www.l-3com.com /randtron/infrmtech.htm (528 words)

	The VIRGO interferometer
		VIRGO is a Michelson laser interferometer with two orthogonal arms each 3 kilometers long.
		In order to further increase the power, this light is sent back to the interferometer by a recycling mirror, in phase with the incident beam thus increasing the light power that can reach several tens of kilowatts in the Fabry-Perot resonant cavities.
		The data cominig from the interferometer as well as the ancillary data necessary to its control (4Mbytes/s) are subjected to a preliminary analysis for quality check and a quick detection of potentially interesting anomalous signals.
	www.ego-gw.it /virgodescription/pag_4.html (404 words)

	Interferometers
		The Twyman-Green interferometer is a very useful instrument for measuring defects in optical components such as lenses, prisms, plane-parallel windows, laser rods, and plane mirrors.
		While the Michelson interferometer is used with an extended light source, the Twyman-Green interferometer is used with a monochromatic point source which is located at the principal focus of a well-corrected lens.
		Usually the interferometers is used to measure the spectrum of a source by scanning the separation d between the two partially reflecting mirrors.
	electron9.phys.utk.edu /optics421/modules/m5/Interferometers.htm (1524 words)

	The Michelson Interferometer
		Michelson explained to his children that his interferometer was simulating a race on a river between two swimmers.
		The interferometer diagrams shown above indicate that for one third of the speed of light, the arms length must be worth about 4 wavelengths in order to obtain the phase opposition.
		The aberration is different in the interferometer because the light source moves at the same speed.
	www.glafreniere.com /sa_Michelson.htm (3666 words)

	JCMT-CSO Interferometer
		The single baseline of the interferometer has an extent of -157.9 m in east-west direction, +43.4 m in polar direction and -1.9 m towards the celestial equator.
		Figure 1.2 shows the elevation and the projected baseline of astronomical sources as a function of their declination and hour angle.
		) of the interferometer is the geometrical mean of the system temperature of the JCMT and the CSO and lies between 300 and 800 K mainly depending on the atmospheric emission.
	cfa-www.harvard.edu /~mwiedner/minithesis/node9.html (546 words)

Try your search on: Qwika (all wikis)