This is one of the scientific objectives of the large decametric interferometer LOFAR, which should be operational in 2007 in Holland. |
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The flip causes a tiny shift in the cantilever's vibration frequency, which is recorded by the laser interferometer. |
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It should be noted that the lengths of the arms of the interferometer on ground-based gravity wave detectors are on the order of 1 kilometer. |
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A meaningful test of Radius system performance required confirmation of the interferometer concept. |
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The Shack cube interferometer is used to test converging wavefronts at the center of curvature of a reflective surface. |
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The apparatus is advantageously used in an interferometer to form a device that modulates the amplitude of the optical signal. |
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This dynamic interferometer with a holographic optical element produces four phase-shifted interferograms imaged on a single detector. |
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Some of the light that is reflected from the cylinder groove is scattered, and does not re-enter the interferometer. |
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We have started to test the performance of the commercial heterodyne interferometer system. |
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The Swedish physicist prized Michelson's use of his interferometer in metrology and, in particular, for determining experimentally the length of the international metre. |
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Ideally, the light field for such an interferometer is considered to be a monochromatic plane wave of infinite lateral extension. |
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Further analysis showed that in the double-dot interferometer, the spin accumulation can be detailedly manipulated. |
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A test bench for studying the properties of the interferometer has been set up and first measurements of the interference fringes were made. |
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Thus, they are traveling slightly frontward in such a way that the interferometer constantly follows them. |
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The small activity in nanometrology continues with the development of a laser interferometer diffractometer using a three-wavelength method. |
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The interferometer MIDI of the VLTI observed three stars surrounded of protoplanetary discs0000 between 7.5 and 13.5 microns. |
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An independent technique to verify the velocity readings of the interferometer, based on the measurement of the Doppler shift, has been set up. |
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An optical system was developed to align the interferometer beam vertical with respect to local gravity. |
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It is therefore necessary to make the vertical alignment of the measurement beam between the interferometer and the moving coil. |
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As a consequence, the position of the interferometer mirror needs to be changed. |
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A laser interferometer system is under development for the calibration of ultrasonic pressure standards. |
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Recently, an interferometer was integrated into the system, which will significantly improve the performance. |
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It is the first observation of an active galaxy nucleus by an interferometer in the thermal infra-red. |
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A laser interferometer system was established in 1997 covering the range from 50 Hz to 500 Hz using the ratio counting method. |
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A study has been made in which expressions for these phase-corrections were derived for the case of a two-beam interferometer. |
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A prototype of the laser to be used for the interferometer has been modified according to the requirements of this application. |
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Several telescopes, among the largest on Earth, are connected by monomode fibers, several hundreds of meters long to form a giant interferometer. |
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A Michelson interferometer is better suited for fringe interpolation than a Fabry-Perot instrument. |
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Once it was ready, Warren decided to use his new interferometer to find out if the speed of light changed when it travelled in different gases. |
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It involves moving the reference flat of the interferometer in fixed steps with a piezoelectric stage, which shifts the fringes, resulting in a series of interferograms. |
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The downward radiance measured by the infrared interferometer is a combination of thermal emission by atmospheric water vapor and by the cloud ice mass. |
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In signal recycling it is these sidebands that are stripped off the laser carrier wave and sent back into the interferometer, so that the signal can be built up and amplified. |
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First, a sphere's diameter was measured by an interferometer, which uses lasers to compare lengths to within a hundred billionth of a metre. |
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A heterodyne interferometer provides an ac signal with better signal-to-noise ratio than a homodyne system. |
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We have continued to work on the magnetic circuit, velocity control and measurement alignment of the balance suspension, and on the verticality of the interferometer laser beam. |
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In 1946, the British radio astronomer Martin Ryle, with the help of the physicist Derek D. Vonberg, constructed the first interferometer that could operate in the domain of radio waves. |
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The two artefacts and the heart of the refractometer, a double Fabry-Perot interferometer, were placed inside the FB-2 balance case, which is equipped with accurate devices for measuring the ambient air parameters. |
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A spectrum is obtained by recording photoelectrically the light intensity of the interference pattern as the carriage is moved when an absorption cell is placed in one of the arms of the interferometer. |
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The mode coupling optics will be developed at the BIPM during this year and we have started to set up an interferometric test bench to study the contribution of the interferometer to the total uncertainty of the system. |
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Much work has therefore been carried out to understand the detailed functioning, and in particular the timing, of the voltmeters and the interferometer. |
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Three-metre level rods with scales on an invar ribbon, and 60-inch target bars for optical triangulation systems are calibrated using a long-bed Abbé comparator equipped with a laser interferometer. |
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Rather, it is granular and since the two daughter beams from the interferometer pass through different sets of granules they will be affected differently, and will not match when they are recombined. |
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They plan to put an interferometer on the seabed, using a robot submarine. |
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The reduction of noise requires a detailed understanding of the operation of the voltmeters and the interferometer, and in particular of their timing. |
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We will also develop software for the calculation of the interference patterns in a multi-beam interferometer and for simulation of the effects of misalignments of the optical components. |
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The optical quality of the interferometer has been evaluated using both auto-collimation techniques and a method combing a lens and a beam scan detector. |
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In Chu's interferometer, lasers not only precool atoms but also lie at the heart of the device. |
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The measurements in vacuum allow us to control possible long-term drifts in the mass difference between the two artefacts or in the length of the Zerodur spacer in the interferometer. |
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This software will allow us to simulate the interference pattern of the interferometer, and to estimate the related uncertainty contribution, which will be one of the major uncertainties of the calculable capacitor. |
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The precision three-grating interferometer can be produced in silicon nitride or ultrananocrystalline diamond using state-of-the-art nanofabrication. |
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