Results 211 to 220 of about 13,178 (248)
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Dispersion measurements of water with white-light interferometry
Applied Optics, 1998We measure the second- and third-order dispersion coefficients, d(2)k/domega(2) and d(3)k/domega(3), of water for wavelengths from 0.45 to 1.3 mum using a Michelson white-light interferometer. In this interval, the second-order dispersion ranges from 0.068 to -0.1 fs(2)/mum, and the third-order dispersion ranges from 0.048 to 1.18 fs(3)/mum. We observe
A G, Van Engen +2 more
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Dispersion at nuclear resonance in time-delayed interferometry
Physical Review B, 1994Interference between x-ray beams scattered from a nuclear resonance in stainless-steel foils of different thicknesses has been observed. In-phase and out-of-phase oscillations have been measured for yields with three different time windows, which exist because of a sign change of the amplitude describing the time evolution of the nuclear-resonant ...
, Hasegawa +6 more
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Dispersion free measurements in neutron interferometry
Physica B: Condensed Matter, 2000Abstract Neutron interferometry is a method of high-accuracy determination of neutron scattering length b c . The phase shift acquired by a neutron wave that propagates through a sample inserted in one of the beams of an interferometer is proportional to the neutron wavelength.
M Vrána +4 more
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Broadband chromatic dispersion in fiber-coupled optical interferometry
Applied Optics, 2021Chromatic dispersion is a well-known technical challenge in optical interferometry, and the issue is exacerbated when using optical fibers for beam transport. The important sources of chromatic dispersion in a fiber-coupled optical interferometer are investigated using a Mach–Zehnder interferometer operating between 975–1650 nm ...
Ryan, Allured, Jonathan B, Ashcom
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Phase Dispersion in Interferometry
Optica Acta: International Journal of Optics, 1960It is shown that the interference equation for interferometers exhibiting phase-change effects should take the form Mλ = 2d — λv/~, where v is (β — π) and β is the phase-change at reflection for one reflecting surface. Several recent treatments of the phase-change on reflection are critically examined and it is shown that the phase-dispersion deduced ...
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Multiple-Delay Externally Dispersed Interferometry
Fourier Transform Spectroscopy/ Hyperspectral Imaging and Sounding of the Environment, 2005A grating spectrograph's resolution was boosted 6x (25,000 to 140,000) by combining it in series with a Michelson interferometer whose delay was sequentially moved in a few large steps.
David J. Erskine, Jerry Edelstein
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Compensation and optimization of dispersion in nulling interferometry
SPIE Proceedings, 2008The optical properties of materials are wavelength-dependent. This property, called dispersion, affects the performance of a wide-band nulling interferometer by inducing wavelength-dependent phase differences between the arms of the interferometer. In this paper, we analyze the influence of dispersion in nulling interferometers for exoplanet detection.
Spronck, J.F.P. (author) +2 more
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Dispersion measurements of water with spectral interferometry
Chinese Optics Letters, 2009The spectral relative phase is directly derived from the spectrally resolved interferogram by the Fourier transform method. Furthermore, the spectral absolute phase can also be found. The spectral absolute phase is used to measure the refractive index.
王建岗 Jiangang Wang +2 more
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Dispersion Cancellation and Manipulation in Quantum Interferometry
Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing, 2008We demonstrate simultaneous even- and odd-order spectral dispersion cancellation in a single experiment. We also present a spatial counterpart of the dispersion cancellation effect that leads to the removal of even-order aberrations in quantum interference.
Alexander V. Sergienko +3 more
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Bandwidth limitations and dispersion in optical stellar interferometry
Applied Optics, 1996The fringe visibility measured by a stellar interferometer may be degraded if the interferometer uses an air delay line without compensating for longitudinal dispersion. Whereas in such circumstances simultaneous observations across the visible spectrum are shown to be impracticable at baselines as short as 10 m, it is shown possible to detect 95% of ...
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