Results 241 to 250 of about 735,472 (273)

Dispersion free measurements in neutron interferometry

Physica B: Condensed Matter, 2000
Abstract 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, P Mikula, P Lukáš, A Ioffe, W Nistler   +4 more
openaire   +1 more source

Absolute Angle and Glass Thickness Measurement Based on Dispersive Interferometry

IEEE Photonics Technology Letters, 2019
Method to accurately measure both refractive index and the thickness of glass is investigated. The method combines equal inclination interference with dispersive interferometry.
Bo Peng, Xinghua Qu, Fumin Zhang, Guoqing Tang, Tianyu Zhang, Xianyu Zhao   +5 more
semanticscholar   +1 more source

Dispersed interferometry for infrared exoplanet velocimetry

SPIE Proceedings, 2008
The TEDI (TripleSpec - Exoplanet Discovery Instrument) is the first instrument dedicated to the near infrared radial velocity search for planetary companions to low-mass stars. The TEDI uses Externally Dispersed Interferometry (EDI), a combination of interferometry and multichannel dispersive spectroscopy. We have joined a white-light interferometer
Jerry Edelstein, Matthew W. Muterspaugh, David Erskine, Mario Marckwordt, W. Michael Feuerstein, Tony Mercer, Agnieszka Czeszumska, Jaclyn Schwer, Sam Halverson, James P. Lloyd, Philip S. Muirhead, Jason T. Wright, Terry Herter   +12 more
openaire   +1 more source

Phase Dispersion in Interferometry

Optica Acta: International Journal of Optics, 1960
It 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 ...
openaire   +1 more source

Dispersion measurements with white-light interferometry

Journal of the Optical Society of America B, 1996
White-light interferograms provide a simple, accurate, and physically intuitive picture of what happens to broadband optical pulses on transmission through, or reflection from, common optical materials. Quantitative measurement of group delay are made with an accuracy of ±0.1 fs and with high spectral resolution. This measurement accuracy is applied to
Diels, J.C., Diddams, S.
openaire   +1 more source

Analysis of the influence of dispersive objective lenses on spectral confocal interferometry systems

Other Conferences
In spectral confocal interferometry technique, the performance parameters of dispersive objective lenses exert significant influence on signal characteristics, which in turn affect the measurement performance of the system.
Guxuan Yin, Shuai Ge, Jiankang Zhou
semanticscholar   +1 more source

Air-dispersion measurement by second-harmonic heterodyne interferometry

Optics Letters, 2002
Interferometers with long optical paths in air usually require knowledge and control of air dispersion. In addition, the measurements at several wavelengths and the dispersion properties of air allow errors caused by air turbulence to be compensated for.
Yves, Salvadé, René, Dändliker, Alain, Courteville, Michaël, Zickar   +3 more
openaire   +2 more sources

Experimental Analysis of Inter-Pulse Phase and Timing Relation in GHz-Rate Harmonically Mode-Locked Fiber Laser Using Dispersive Time-Delay Interferometry

2024 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)
We measured the inter-pulse relations in a GHz-rate harmonically mode-locked fiber laser using the dispersive time-delay interferometry technique, revealing that the uniformity of inter-pulse timing relies on repetition-rate detuning while the phase ...
B. Wang, X. Wang, W. He, X. Zhang, Q. Huang, Z. Huang, X. Jiang, M. Pang   +7 more
semanticscholar   +1 more source

Taylor Dispersion Analysis of Polysaccharides Using Backscattering Interferometry

Analytical Chemistry, 2017
Taylor dispersion analysis (TDA) allows the determination of the molecular diffusion coefficient (D) or the hydrodynamic radius (Rh) of a solute from the peak broadening of a plug of solute in a laminar Poiseuille flow. The main limitation plaguing the broader applicability of TDA is the lack of a sensitive detection modality.
Phoonthawee Saetear, Joseph Chamieh, Michael N. Kammer, Thomas J. Manuel, Jean-Philippe Biron, Darryl J. Bornhop, Hervé Cottet   +6 more
openaire   +2 more sources

Dispersion measurements of water with white-light interferometry

Applied Optics, 1998
We 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, S A, Diddams, T S, Clement   +2 more
openaire   +2 more sources