Results 1 to 10 of about 351,901 (160)

Quantum-assisted optical interferometers: instrument requirements [PDF]

Astronomical Telescopes + Instrumentation, 2020
It has been recently suggested that optical interferometers may not require a phase-stable optical link between the stations if instead sources of quantum-mechanically entangled pairs could be provided to them, enabling extra- long baselines and ...
A. Nomerotski, P. Stankus, A. Slosar, S. Vintskevich, Shane Andrewski, G. Carini, D. Dolzhenko, D. England, E. Figueroa, Sonali Gera, J. Haupt, S. Herrmann, D. Katramatos, M. Keach, A. Parsells, O. Saira, J. Schiff, P. Svihra, T. Tsang, Ying-Wen Zhang   +19 more
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Two multi-wavelength interferometers for large-scale surveying

Proceedings of the 5th Joint International Symposium on Deformation Monitoring - JISDM 2022, 2022
Deformation monitoring requires the detection of smallest changes, always at the limits of technical feasibility. Trying to push these limits further, we have realised two terrestrial ranging instruments: a long-range 1D electro-optic distance meter and ...
Anni Sauthoff, P. Köchert, G. Prellinger, T. Meyer, F. Pilarski, S. Weinrich, Frank Schmaljohann, Joffray Guillory, D. Truong, Jakob Silbermann, U. Kallio, J. Jokela, F. Pollinger   +12 more
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Progress in the construction and testing of the Tianlai radio interferometers [PDF]

Astronomical Telescopes + Instrumentation, 2018
The Tianlai Pathfinder is designed to demonstrate the feasibility of using wide field of view radio interferometers to map the density of neutral hydrogen in the Universe after the Epoch of Reionizaton.
Santanu Das, C. Anderson, R. Ansari, J. Campagne, D. Charlet, Xue-Lei Chen, Zhiping Chen, A. Cianciara, P. Colom, Y. Cong, K. Gayley, Jing-Chao Geng, Jie Hao, Qizhi Huang, Celeste S. Keith, Chao Li, Ji-Xia Li, Yi-Chao Li, Chao Liu, Tao Liu, C. Magneville, J. Marriner, Jean-Michel Martin, M. Moniez, Trevor M. Oxholm, U. Pen, O. Perdereau, J. Peterson, Huli Shi, Lin Shu, A. Stebbins, Shi-Jie Sun, P. Timbie, S. Torchinsky, G. Tucker, Guisong Wang, Rong-Li Wang, Xin Wang, You-Gang Wang, Feng-Quan Wu, Yi-Dong Xu, Kaifeng Yu, Jiao Zhang, Juyong Zhang, Le Zhang, Jialu Zhu, S. Zuo   +46 more
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Recent Progress on dispersion interferometers for nuclear fusion and low-temperature plasmas

Journal of Instrumentation, 2020
A dispersion interferometer (DI) is known to be less sensitive to mechanical vibrations, which is one of the main sources of error for conventional interferometers. A simple optical configuration is also one of the advantages of the DI approach.
T. Akiyama, M. V. Van Zeeland, T. N. Carlstrom, R. L. Boivin, K. Brunner, J. Knauer, Ryo Yasuhara, Kenji Tanaka, Hu-Lin Liu, Y. Zhou, N. Oyama, A. Sirinelli, K. Urabe, N. Shirai   +13 more
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Binary pseudorandom array test standard optimized for characterization of large field-of-view optical interferometers

Optical Engineering + Applications, 2020
Recently, a technique for calibrating the modulation transfer function (MTF) of a broad variety of metrology instrumentation has been demonstrated. This technique is based on test samples structured as one-dimensional binary pseudo-random (BPR) sequences
V. Yashchuk, S. Babin, S. Cabrini, W. Chao, U. Griesmann, I. Lacey, S. Marchesini, K. Munechika, C. Pina-Hernandez, A. Roginsky   +9 more
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Development of the Fabry-Perot interferometers for the HIRMES spectrometer on SOFIA [PDF]

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 2018
HIRMES is a far-infrared spectrometer that was chosen as the third generation instrument for NASA's SOFIA airborne observatory. HIRMES promises background limited performance in four modes that cover the wavelength range between 25 and 122 μm.
G. Gull, K. Rossi, James G. Douthit, G. Stacey, T. Nikola, S. Moseley, A. Kutyrev, C. Henderson   +7 more
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Generic data reduction for nulling interferometry package: the grip of a single data reduction package on all the nulling interferometers [PDF]

Astronomical Telescopes + Instrumentation
Nulling interferometry is a powerful observing technique to reach exoplanets and circumstellar dust at separations too small for direct imaging with single-dish telescopes and too large for indirect methods. With near-future instrumentation, it bears the
M. Martinod, D. Defrére, R. Laugier, S. Ertel, O. Absil, Barnaby Norris, G. Garreau, B. Mennesson   +7 more
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Imaging and nulling properties of sparse-aperture Fizeau interferometers [PDF]

Astronomical Telescopes and Instrumentation, 2014
In this communication are presented rigorous and approximate analytical expressions of the Point Spread Function (PSF) and Field of View (FoV) achievable by multi-aperture Fizeau interferometers, either of the imaging or nulling types.
F. Hénault
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Principles of Construction of Autodyne Interferometers and the Possibility of their Application in Optical Instrumentation Sy

Ural Radio Engineering Journal
An overview of the principles of construction of autodyne interferometers and the possibilities of their application in optical instrumentation systems and devices is presented.
K. Ignatkov, S. A. Iskachev, A. Luchinin, I. Malygin, V. Noskov, V. V. Povetyev   +5 more
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Characterization and operation optimization of large aperture optical interferometers using binary pseudorandom array test standards

Optical Engineering + Applications, 2018
Recently, a technique for calibration of the Modulation Transfer Function (MTF) of a broad variety of metrology instrumentation has been established. The technique is based on test samples structured according to binary pseudorandom (BPR) one-dimensional
V. Yashchuk, S. Babin, S. Cabrini, U. Griesmann, I. Lacey, K. Munechika, C. Pina-Hernandez, Quan-dou Wang   +7 more
semanticscholar   +1 more source