Search Results - "Delage, Laurent"

Outdoor fibre link between two telescopes and the lab of the CHARA array at 810 nm. Demonstration of the optical path servo control by 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…”
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Impact of Channel Thickness on the Large-Signal Performance in InAlGaN/AlN/GaN HEMTs With an AlGaN Back Barrier by Malmros, Anna, Gamarra, Piero, Thorsell, Mattias, Hjelmgren, Hans, Lacam, Cedric, Delage, Sylvain Laurent, Zirath, Herbert, Rorsman, Niklas

“…The impact of varying the GaN channel layer thickness (<inline-formula> <tex-math notation="LaTeX">{t}_{\text {ch}} </tex-math></inline-formula>) in…”
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SThM Temperature Mapping and Nonlinear Thermal Resistance Evolution With Bias on AlGaN/GaN HEMT Devices by Aubry, R., Jacquet, J.-C., Weaver, J., Durand, O., Dobson, P., Mills, G., di Forte-Poisson, M.-A., Cassette, S., Delage, S.-L.

“…Channel temperature has a strong impact on the performance of a microwave power transistor. In particular, it has a strong influence on the power gain,…”
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Single photon MIR upconversion detector at room temperature with a PPLN ridge waveguide by Lehmann, Lucien, Grossard, Ludovic, Delage, Laurent, Reynaud, Francois, Chauvet, Mathieu, Bassignot, Florent

“…In this paper we describe an upconversion detector in the mid infrared (around 3.5 μm). We take advantage of the PPLN ridge waveguide technology to achieve…”
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In-lab ALOHA mid-infrared up-conversion interferometer in the photon counting regime @λ = 3.39 µm by Szemendera, Ludovic, Grossard, Ludovic, Delage, Laurent, Reynaud, François

“…Astronomical Light Optical Hybrid Analysis (ALOHA@3.39 µm) is a new instrumental concept designed for high angular resolution astronomical imaging in the L…”
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First on-sky interference fringes at 810 nm with the CHARA Array using servo controlled hectometric outdoor fibre links by Magri, Julie, Grossard, Ludovic, Reynaud, François, Fabert, Marc, Lehmann, Lucien, Ligon, Laurent Delage Robert, Vargas, Norm, Majoinen, Olli, ten Brummelaar, Theo, Farrington, Chris, Scott, Nic, Anugu, Narsireddy, Schaefer, Gail, Gies, Douglas, Woods, Craig, Golden, Steve, Castillo, Victor, Anderson, Matt, Krawczyk, Rodolphe, Le Duigou, Jean-Michel

“…In the framework of the ALOHA (Astronomical Light Optical Hybrid Analysis) project, we have implemented a fibre-linked interferometer connecting two telescopes…”
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Influence of the input-stage architecture on the in-laboratory test of a mid-infrared interferometer: application to the ALOHA up-conversion interferometer in the L band by Magri, Julie, Lehmann, Lucien, Grossard, Ludovic, Delage, Laurent, Reynaud, François, Chauvet, Mathieu, Bassignot, Florent, Krawczyk, Rodolphe, Le Duigou, Jean-Michel

“…ABSTRACT In the framework of the Astronomical Light Optical Hybrid Analysis (ALOHA) laboratory mid-infrared (MIR) up-conversion fibred interferometer in the L…”
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Towards a mid-infrared L band up-conversion interferometer: first on-sky sensitivity test on a single arm by Lehmann, Lucien, Grossard, Ludovic, Delage, Laurent, Reynaud, François, Chauvet, Mathieu, Bassignot, Florent, Martinache, Frantz, Morand, Frédéric, Rivet, Jean-Pierre, Schmider, François-Xavier, Vernet, David

“…Abstract We report on the first on-sky sensitivity test on a single arm of the Astronomical Light Optical Hybrid Analysis (ALOHA) instrument, an uncooled…”
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Multichannel spectral mode of the ALOHA up-conversion interferometer by Lehmann, L, Darré, P, Boulogne, H, Delage, L, Grossard, L, Reynaud, F

“…Abstract In this paper, we propose a multichannel spectral configuration of the Astronomical Light Optical Hybrid Analysis (ALOHA) instrument dedicated to…”
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Effect of spectral sampling on the temporal coherence analysis of a broadband source in a SFG interferometer by Darré, Pascaline, Szemendera, Ludovic, Grossard, Ludovic, Delage, Laurent, Reynaud, François

“…In the frame of sum frequency generation of a broadband infrared source, we aim to enlarge the converted bandwidth by using a pump frequency comb while keeping…”
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Control of the coherence behavior in a SFG interferometer through the multipump phases command by Darré, P, Lehmann, L, Grossard, L, Delage, L, Reynaud, F

“…In this paper, we report on a novel method to control the coherence behavior in a sum frequency generation interferometer powered by two independent pump…”
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First fringes on the sky with an upconversion interferometer tested on a telescope Array by Darré, Pascaline, Delage, Laurent, Grossard, Ludovic, Reynaud, François, Baudoin, Romain, Gomes, Jean-Thomas, Scott, Nicholas J, Sturmann, Judit, Farrington, Chris, ten Brummelaar, Theo

“…The Astronomical Light Optical Hybrid Analysis (ALOHA) project investigates the combined use of a telescope array interferometer and nonlinear optics to…”
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In-lab ALOHA mid-infrared up-conversion interferometer with high fringe contrast @λ = 3.39 μm by Szemendera, L., Darré, P., Baudoin, R., Grossard, L., Delage, L., Herrmann, H., Silberhorn, C., Reynaud, F.

“…We report on the implementation of a mid-infrared (MIR) interferometer prototype for furthermore application in the framework of high-resolution imaging in…”
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Environmental characterisation and stabilisation of a 2×200-meter outdoor fibre interferometer at the CHARA Array by Lehmann, Lucien, Delage, Laurent, Grossard, Ludovic, Reynaud, Francois, Golden, Steve, Woods, Craig, Webster, Larry, Sturmann, Judit, Brummelaar, Theo ten

“…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…”
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Phase closure retrieval in an infrared-to-visible upconversion interferometer for high resolution astronomical imaging by Ceus, Damien, Tonello, Alessandro, Grossard, Ludovic, Delage, Laurent, Reynaud, François, Herrmann, Harald, Sohler, Wolfgang

“…This paper demonstrates the use of a nonlinear upconversion process to observe an infrared source through a telescope array detecting the interferometric…”
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Laboratory demonstration of spatial-coherence analysis of a blackbody through an up-conversion interferometer by Gomes, J-T, Delage, L, Baudoin, R, Grossard, L, Bouyeron, L, Ceus, D, Reynaud, F, Herrmann, H, Sohler, W

“…In the field of high resolution imaging in astronomy, we experimentally demonstrate the spatial-coherence analysis of a blackbody using an up-conversion…”
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Contrast and phase closure acquisitions in photon counting regime using a frequency upconversion nterferometer for high angular resolution imaging by Ceus, Damien, Delage, Laurent, Grossard, Ludovic, Reynaud, François, Herrmann, Harald, Sohler, Wolfgang

“…In the context of new generation instruments for astronomical interferometer, we have developed in laboratory a new kind of optical interferometer using the…”
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Optical fiber systems are convectively unstable by Mussot, A, Louvergneaux, E, Akhmediev, N, Reynaud, F, Delage, L, Taki, M

“…We theoretically and experimentally evidence that fiber systems are convective systems since their nonlocal inherent properties, such as the dispersion and…”
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Demonstration of a frequency spectral compression effect through an up-conversion interferometer by Gomes, Jean-Thomas, Grossard, Ludovic, Ceus, Damien, Vergnole, Sébastien, Delage, Laurent, Reynaud, François, Herrmann, Harald, Sohler, Wolfgang

“…This paper reports on the experimental implementation of an interferometer featuring sum frequency generation (SFG) processes powered by a pump spectral…”
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Co-phasing of a diluted aperture synthesis instrument for direct imagingII. Experimental demonstration in the photon-counting regime with a temporal hypertelescope by Bouyeron, Laurent, Delage, Laurent, Baudoin, Romain, Gomes, Jean-Thomas, Grossard, Ludovic, Reynaud, François

“…Context. Amongst the new techniques currently developed for high-resolution and high-dynamics imaging, the hypertelescope architecture is very promising for…”
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