Výsledky vyhledávání - "Ettore Pedretti"

Akademický článek

Neonatal diagnosis of isolated absence of the right pulmonary artery: a case report and review of the literature

Autor: Akamin Raymond, Ettore Pedretti, Giuseppina Privitera, Cristina Cicero, Giacomo Biasucci

Publikováno v: Italian Journal of Pediatrics, Vol 44, Iss 1, Pp 1-4 (2018)

Abstract Background Unilateral absence of the pulmonary artery (UAPA) is a rare congenital malformation often associated with other cardiac anomalies; however it may occur as an isolated lesion. Isolated absence of the right pulmonary artery is twice

Externí odkaz: https://doaj.org/article/c3e8098b5b8f416a99a34216d7bb2317

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Astronomie et Astrophysique

Publikováno v: The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, In press

We present H-band interferometric observations of the red supergiant (RSG) AZ Cyg made with the Michigan Infra-Red Combiner (MIRC) at the six-telescope Center for High Angular Resolution Astronomy (CHARA) Array. The observations span 5 years (2011-20

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1614489136484713b167a3d11323c0de
https://hal.archives-ouvertes.fr/hal-03367843

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First on-sky results with an interferometric discrete beam combiner (DBC) at the William Herschel Telescope

Autor: Simone Piacentini, James Osborn, Nazim Ali Bharmal, Roberto Osellame, Lisa Bardou, Lazar Staykov, Giacomo Corrielli, Kalaga Madhav, Ettore Pedretti, Jean-Tristan M. Buey, Tarun Kumar Sharma, Martin Roth, Lucas Labadie, Eric Gendron, Abani Shankar Nayak, Tim Morris, Mathieu Cohen, Fanny Chemla, Aline N. Dinkelaker

Publikováno v: Optical and Infrared Interferometry and Imaging VII.

In long-baseline interferometry, over the last few decades integrated optics beam combiners have become at- tractive technological solutions for new-generation instruments operating at infrared wavelengths. We have investigated different architecture

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3dc318ce750d97fdc71da9b202a33aab
https://doi.org/10.1117/12.2562563

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K-band integrated optics beam combiners for CHARA fabricated by ultrafast laser inscription

Autor: Ettore Pedretti, T. ten Brummelaar, David Guillaume MacLachlan, Robert R. Thomson, Vincent Coudé du Foresto, Kalaga Madhav, Martin Roth, Aurélien Benoit, Tarun Kumar Sharma, Lucas Labadie, Aline N. Dinkelaker, Fraser A. Pike, Abani Shankar Nayak, Nicholas Scott

Publikováno v: Optical and Infrared Interferometry and Imaging VII.

We report the ultrafast laser inscription (ULI) and characterization of 3 dB directional achromatic couplers for K-band between 2 and 2.4 μm. The couplers were fabricated in commercial Infrasil glass using 1030 nm femtosecond laser pulses. Straight

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4e48dc782de170496a24952eadab298b
https://doi.org/10.1117/12.2561663

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Chromatic response of a four-telescope integrated-optics discrete beam combiner at the astronomical L band

Autor: Ettore Pedretti, Abani Shankar Nayak, Kalaga Madhav, Tarun Kumar Sharma, Martin Roth, Thomas Poletti, Lucas Labadie

Publikováno v: Optics express. 28(23)

We show the results of simulation and experimental study of a 4-telescope zig-zag discrete beam combiner (DBC) for long-baseline stellar interferometry working at the astronomical L band (3 − 4 µm) under the influence of a narrow bandwidth light s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e78aad1b251034da6fda1a6b1d4a4a7
https://pubmed.ncbi.nlm.nih.gov/33182907

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Spectral Calibration of the SLSTR Focal Plane Assemblies

Autor: Tim Nightingale, Robert McPheat, Arrow Lee, Ed Polehampton, Ettore Pedretti, Hugh Mortimer

We describe a novel technique – Fourier transform spectroscopy – that we have developed to characterise the spectral and polarisation responses of the Sentinel-3 SLSTR optical channels. Our method has a number of advantages over conventional appr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b247d09a78dc06ab271ab2e8812c500
https://doi.org/10.5194/egusphere-egu2020-22057

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Integrated discrete beam combiner with a pupil remapper for stellar interferometry (Conference Presentation)

Autor: Stefano Minardi, Lucas Labadie, Abani Shankar Nayak, Kalaga Madhav, Roberto Osellame, Giacomo Corrielli, Tarun Kumar Sharma, Ettore Pedretti, Simone Piacentini

Publikováno v: Photonic Instrumentation Engineering VII.

Stellar interferometry performed in integrated photonic devices allows to increase the angular resolution of a ground-based telescope. Here we present the fabrication and characterization of a low-loss polarization insensitive photonic circuit for as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5b958874af056baf7285adc8bcdf832
https://doi.org/10.1117/12.2545027

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Femtosecond laser writing of 3D polarization insensitive integrated devices for astrophotonics (Conference Presentation)

Autor: Kalaga Madhav, Simone Piacentini, Andrea Adami, Abani Shankar Nayak, Stefano Minardi, Giacomo Corrielli, Roberto Osellame, Ettore Pedretti, Lucas Labadie, Tarun Kumar Sharma

Publikováno v: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XX.

Astrophotonics is an emerging tool for increasing the angular resolution in ground-based sky observations. Due to the unpolarized nature of celestial light, it is necessary to operate with fully polarization insensitive integrated devices. In this re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3601bbf76e3d7af7959b8581379851a6
https://doi.org/10.1117/12.2544978

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