Zobrazeno 1 - 10
of 2 930
pro vyhledávání: '"Optical Interferometry"'
Publikováno v:
水下无人系统学报, Vol 32, Iss 4, Pp 644-649 (2024)
To achieve underwater-aerial trans-medium uplink wireless communication, based on the laser interference detection of underwater acoustic signals, attenuation curves of acoustic signals at various water depths to the water surface and micro-vibration
Externí odkaz:
https://doaj.org/article/576675420d074a19b3ffa5a38cd42aa1
Autor:
Mamoru Tohyama, Yasuhiro Ohmiya, Michiru Hirose, Hiroki Matsuyama, Takuya Toda, Kenichi Hasegawa, Takaaki Onizuka, Hideaki Sato, Masahiro Yokoi, Norikazu Sato
Publikováno v:
Tribology Online, Vol 19, Iss 3, Pp 149-156 (2024)
High-speed deep-groove ball bearings for the eAxle of electric vehicles must adapt to higher rotational speed conditions, because eAxle motor speed increases to downsize the unit. Therefore, it is necessary to clarify the lubrication process of ball
Externí odkaz:
https://doaj.org/article/5536428443744f659c976a33660b7748
Autor:
Takehiro Tachizaki, Jeremy J. Baumberg, Osamu Matsuda, Motonobu Tomoda, Hirotsugu Ogi, Oliver B. Wright
Publikováno v:
Photoacoustics, Vol 34, Iss , Pp 100566- (2023)
We introduce a spectral analysis method in picosecond ultrasonics to derive strain pulse shapes in an opaque sample with known optical properties. The method makes use of both the amplitude and phase of optical transient relative reflectance changes
Externí odkaz:
https://doaj.org/article/9a3d8137c1454aae90fac5f06e95fa49
Autor:
Basani Jasvith Raj, Vadlamani Sri Krishna, Bandyopadhyay Saumil, Englund Dirk R., Hamerly Ryan
Publikováno v:
Nanophotonics, Vol 12, Iss 5, Pp 975-984 (2023)
Multiport interferometers based on integrated beamsplitter meshes have recently captured interest as a platform for many emerging technologies. In this paper, we present a novel architecture for multiport interferometers based on the sine–cosine fr
Externí odkaz:
https://doaj.org/article/a69ae014a97048bfa3bfe4a12e5ead90
Publikováno v:
IEEE Access, Vol 11, Pp 26729-26758 (2023)
A technique for the simulation of multimode quantum optical interferometry and protocols in quantum communications is introduced. This technique is very efficient at simulating in the single-photon-counting regime. This works by treating the photons
Externí odkaz:
https://doaj.org/article/3f95ec0320524a5f84f8a6627907be74
Autor:
Zexuan Wu, Subo Dong, A. Mérand, Christopher S. Kochanek, Przemek Mróz, Jinyi Shangguan, Grant Christie, Thiam-Guan Tan, Thomas Bensby, Joss Bland-Hawthorn, Sven Buder, Frank Eisenhauer, Andrew P. Gould, Janez Kos, Tim Natusch, Sanjib Sharma, Andrzej Udalski, J. Woillez, David A. H. Buckley, I. B. Thompson, Karim Abd El Dayem, Anthony Berdeu, Jean-Philippe Berger, Guillaume Bourdarot, Wolfgang Brandner, Richard I. Davies, Denis Defrère, Catherine Dougados, Antonia Drescher, Andreas Eckart, Maximilian Fabricius, Helmut Feuchtgruber, Natascha M. Förster Schreiber, Paulo Garcia, Reinhard Genzel, Stefan Gillessen, Gernot Heißel, Sebastian Hönig, Mathis Houlle, Pierre Kervella, Laura Kreidberg, Sylvestre Lacour, Olivier Lai, Romain Laugier, Jean-Baptiste Le Bouquin, James Leftley, Bruno Lopez, Dieter Lutz, Felix Mang, Florentin Millour, Miguel Montargès, Hugo Nowacki, Mathias Nowak, Thomas Ott, Thibaut Paumard, Karine Perraut, Guy Perrin, Romain Petrov, Pierre-Olivier Petrucci, Nicolas Pourre, Sebastian Rabien, Diogo C. Ribeiro, Sylvie Robbe-Dubois, Matteo Sadun Bordoni, Daryl Santos, Jonas Sauter, Jules Scigliuto, Taro T. Shimizu, Christian Straubmeier, Eckhard Sturm, Matthias Subroweit, Calvin Sykes, Linda Tacconi, Frédéric Vincent, Felix Widmann, the GRAVITY+ collaboration
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 229 (2024)
We resolve the multiple images of the binary-lens microlensing event ASASSN-22av using the GRAVITY instrument of the Very Large Telescope Interferometer (VLTI). The light curves show weak binary-lens perturbations, complicating the analysis, but the
Externí odkaz:
https://doaj.org/article/ec169c4efbcd4751ad64e77ba5835a2f
Autor:
William O. Balmer, Kyle Franson, Antoine Chomez, Laurent Pueyo, Tomas Stolker, Sylvestre Lacour, Mathias Nowak, Evert Nasedkin, Markus J. Bonse, Daniel Thorngren, Paulina Palma-Bifani, Paul Mollière, Jason J. Wang, Zhoujian Zhang, Amanda Chavez, Jens Kammerer, Sarah Blunt, Brendan P. Bowler, Mickael Bonnefoy, Wolfgang Brandner, Benjamin Charnay, Gael Chauvin, Th. Henning, A.-M. Lagrange, Nicolas Pourré, Emily Rickman, Robert De Rosa, Arthur Vigan, Thomas Winterhalder
Publikováno v:
The Astronomical Journal, Vol 169, Iss 1, p 30 (2024)
Direct imaging observations are biased toward wide-separation, massive companions that have degenerate formation histories. Although the majority of exoplanets are expected to form via core accretion, most directly imaged exoplanets have not been con
Externí odkaz:
https://doaj.org/article/db37afb17b5348f6a89080dfd2ed5ff5
Autor:
Yoo Jung Kim, Michael P. Fitzgerald, Jonathan Lin, Steph Sallum, Yinzi Xin, Nemanja Jovanovic, Sergio Leon-Saval
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 2, p 113 (2024)
Photonic lanterns (PLs) are tapered waveguides that gradually transition from a multimode fiber geometry to a bundle of single-mode fibers (SMFs). They can efficiently couple multimode telescope light into a multimode fiber entrance at the focal plan
Externí odkaz:
https://doaj.org/article/7a1a511b63654ade921b15c3a9d391b0
Autor:
Robert Klement, Thomas Rivinius, Douglas R. Gies, Dietrich Baade, Antoine Mérand, John D. Monnier, Gail H. Schaefer, Cyprien Lanthermann, Narsireddy Anugu, Stefan Kraus, Tyler Gardner
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 70 (2024)
Rapid rotation and nonradial pulsations enable Be stars to build decretion disks, where the characteristic line emission forms. A major but unconstrained fraction of Be stars owe their rapid rotation to mass and angular momentum transfer in a binary.
Externí odkaz:
https://doaj.org/article/0da8682752b84672a5e5dfabde9c183b
Publikováno v:
Lubricants, Vol 11, Iss 10, p 451 (2023)
An optical interference test rig with spinning elastohydrodynamic lubrication (EHL) was established to investigate the spinning lubrication performance under different oil-supply conditions. Variations in the shape and thickness of the film versus th
Externí odkaz:
https://doaj.org/article/df1128380f7e4d61888656870e79d5cc