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Autor:
Julie Magri, Ludovic Grossard, François Reynaud, Marc Fabert, Laurent Delage, Rodolphe Krawczyk, Jean-Michel Le Duigou
In the framework of the ALOHA (Astronomical Light Optical Hybrid Analysis) project, dedicated to high resolution imaging in the L-band using optical fibre and nonlinear optics, we have implemented a servo controlled hectometric outdoor fibre link bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1488e2baaec2269b673b1d91b724dd28
https://doi.org/10.21203/rs.3.rs-2014442/v1
https://doi.org/10.21203/rs.3.rs-2014442/v1
Autor:
Jean-Michel Le Duigou, Ludovic Grossard, Laurent Delage, Lucien Lehmann, Florent Bassignot, Mathieu Chauvet, François Reynaud, Julie Magri, Rodolphe Krawczyk
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 501:531-540
In the framework of the Astronomical Light Optical Hybrid Analysis (ALOHA) laboratory mid-infrared (MIR) up-conversion fibred interferometer in the L band, we report on the influence of the input-stage architecture. Using an amplitude division set-up
Publikováno v:
Les journées de l'interdisciplinarité.
Les moyens d’observation en astronomie n’ont cessé d’évoluer au fil des siècles. L’utilisation de réseaux de télescopes permet aujourd’hui d’avoir des détails de plus en plus fins dans les images obtenues (grande résolution). Dans
Autor:
Romain Baudoin, Ludovic Szemendera, Pascaline Darré, Lucien Lehmann, Damien Ceus, Sophie Brustlein, Ludovic Grossard, François Reynaud, Jean-Thomas Gomes, Laurent Delage
Publikováno v:
Experimental Astronomy. 46:447-456
This paper gives an overview of the Astronomical Light Optical Hybrid Analysis (ALOHA) project dedicated to investigate a new method for high resolution imaging in mid infrared astronomy. This proposal aims to use a non-linear frequency conversion pr
Autor:
Mathieu Chauvet, F. Martinache, Laurent Delage, Jean-Pierre Rivet, Frédéric Morand, Lucien Lehmann, François-Xavier Schmider, François Reynaud, Ludovic Grossard, David Vernet, Florent Bassignot
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 485 (3), pp.3595-3599. ⟨10.1093/mnras/stz729⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 485 (3), pp.3595-3599. ⟨10.1093/mnras/stz729⟩
International audience
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ded07309f95b7a9646c0513fd4799d00
https://hal.archives-ouvertes.fr/hal-02109633
https://hal.archives-ouvertes.fr/hal-02109633
Autor:
Ludovic Grossard, Laurent Delage, Judit Sturmann, T. ten Brummelaar, Steve Golden, François Reynaud, Craig Woods, Larry Webster, Lucien Lehmann
Publikováno v:
Experimental Astronomy
Experimental Astronomy, Springer Link, 2019, ⟨10.1007/s10686-019-09627-x⟩
Experimental Astronomy, Springer Link, 2019, ⟨10.1007/s10686-019-09627-x⟩
In the framework of the ALOHA project (Astronomical Light Optical Hybrid Analysis), devoted to high resolution imaging in the L band, we investigate in this paper the possibility to deploy fibre links between the telescopes of the CHARA Array. As a f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b3c097ade8b673be7c73b7dd605553b
https://hal.archives-ouvertes.fr/hal-02119711
https://hal.archives-ouvertes.fr/hal-02119711
Autor:
Aleš Chvála, Robert Szobolovszký, Jaroslav Kováč, Martin Florovič, Juraj Marek, Luboš Černaj, Patrik Príbytný, Daniel Donoval, Sylvain Laurent Delage, Jean-Claude Jacquet
Publikováno v:
ASME 2018 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems
In this paper, several methods suitable for real time on-chip temperature measurements of power AlGaN/GaN based high-electron mobility transistor (HEMT) grown on SiC substrate are presented. The measurement of temperature distribution on HEMT surface
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 477 (1), pp.190-194. ⟨10.1093/mnras/sty648⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 477 (1), pp.190-194. ⟨10.1093/mnras/sty648⟩
International audience; In this paper, we propose a multichannel spectral configuration of the Astronomical Light Optical Hybrid Analysis (ALOHA) instrument dedicated to high resolution imaging. A frequency conversion process is implemented in each a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d4a6ded08d53ec07cf0de7e8fe7ea50
https://hal.archives-ouvertes.fr/hal-02093501/file/Lehmann2018_10.1093_mnras_sty648.pdf
https://hal.archives-ouvertes.fr/hal-02093501/file/Lehmann2018_10.1093_mnras_sty648.pdf
Autor:
Martin Florovič, Róbert Szobolovszký, Jaroslav Kováč, Aleš Chvála, Jean-Claude Jacquet, Sylvain Laurent Delage
Publikováno v:
Journal of Electrical Engineering
GaN-based HEMTs’ high potential is deteriorated by self-heating during the operation, this has influence on the electrical properties as well as device reliability. This work is focused on an average channel temperature determination of power AlGaN