Zobrazeno 1 - 10
of 205
pro vyhledávání: '"Antoine, Godard"'
Autor:
Jonas Hamperl, Jan Fabian Geus, Kjell M. Mølster, Andrius Zukauskas, Jean-Baptiste Dherbecourt, Valdas Pasiskevicius, Lukas Nagy, Oliver Pitz, David Fehrenbacher, Hanjo Schaefer, Dirk Heinecke, Michael Strotkamp, Stephan Rapp, Paul Denk, Norbert Graf, Marine Dalin, Vincent Lebat, Rosa Santagata, Jean-Michel Melkonian, Antoine Godard, Myriam Raybaut, Cyrille Flamant
Publikováno v:
Atmosphere, Vol 12, Iss 3, p 402 (2021)
We present a differential absorption lidar (DIAL) laser transmitter concept designed around a Nested Cavity Optical Parametric Oscillator (NesCOPO) based Master Oscillator Power Amplifier (MOPA). The spectral bands are located around 2051 nm for CO2
Externí odkaz:
https://doaj.org/article/f8eede93371e4c05a0db9a824f82c9ad
Publikováno v:
Photoniques
Photoniques, EDP Sciences, 2021, pp.53-57. ⟨10.1051/photon/202111053⟩
Photoniques, EDP Sciences, 2021, pp.53-57. ⟨10.1051/photon/202111053⟩
International audience; Optical parametric oscillators are versatile devices for generating a tunable coherent radiation from an incident laser beam. They rely on nonlinear frequency conversion to cover spectral ranges that are poorly or not covered
Autor:
Maxime Duquesnoy, Guillaume Aoust, Jean-Michel Melkonian, Raphaël Lévy, Myriam Raybaut, Antoine Godard
Publikováno v:
Sensors, Vol 19, Iss 6, p 1362 (2019)
We have designed and fabricated a custom quartz tuning fork (QTF) with a reduced fundamental frequency; a larger gap between the prongs; and the best quality factor in air at atmospheric conditions ever reported, to our knowledge. Acoustic microreson
Externí odkaz:
https://doaj.org/article/eee0961bb98c43c7a6e827f8d874e706
Autor:
Maxime Duquesnoy, Guillaume Aoust, Jean-Michel Melkonian, Raphaël Lévy, Myriam Raybaut, Antoine Godard
Publikováno v:
Proceedings, Vol 2, Iss 13, p 735 (2018)
We have fabricated a custom quartz tuning fork (QTF) with a reduced fundamental frequency, a larger gap between the prongs and the best quality factor in air at atmospheric conditions ever reported. Acoustic microresonators have been added to the QTF
Externí odkaz:
https://doaj.org/article/1474577e3b4445ad889c2ab05c6b3162
Autor:
Kjell Martin Mølster, Marie Guionie, Patrick Mutter, Jean-Baptiste Dherbecourt, Jean-Michel Melkonian, Xavier Délen, Andrius Zukauskas, Carlota Canalias, Fredrik Laurell, Patrick Georges, Myriam Raybaut, Antoine Godard, Valdas Pasiskevicius
Publikováno v:
Optica Advanced Photonics Congress 2022.
Cavity-free, precision-tunable source of a nanosecond, mJ-level, pulses consisting of backward optical parametric oscillator pumped by diode-seeded laser amplifier shows a record threshold of 19 MW/cm2 and an optical-to-optical efficiency exceeding 7
Autor:
Jonas Hamperl, Jean-Baptiste Dherbecourt, Myriam Raybaut, Julien Totems, Patrick Chazette, Laurence Régalia, Bruno Grouiez, Nicolas Geyskens, Oualid Aouji, Nadir Amarouche, Jean-Michel Melkonian, Rosa Santagata, Antoine Godard, Corinne Evesque, Valdas Pasiskevicius, Cyrille Flamant
Publikováno v:
Optics Express
Optics Express, 2022, 30 (26), pp.47199-47215. ⟨10.1364/oe.472451⟩
Optics Express, 2022, 30 (26), pp.47199-47215. ⟨10.1364/oe.472451⟩
This paper presents a first demonstration of range-resolved differential absorption LIDAR (DIAL) measurements of the water vapor main isotopologue H216O and the less abundant semi-heavy water isotopologue HD16O with the aim of determining the isotopi
Autor:
Antoine Godard, Jean-Baptiste Dherbecourt, Myriam Raybaut, Marie Guionie, Jean-Michel Melkonian
Publikováno v:
Journal of the Optical Society of America B
We carry out a theoretical investigation of the backward interaction optical parametric oscillator (OPO), in which one of the generated waves is counterpropagating with respect to the pump. We derive simple, self-consistent analytical formulas for th
Autor:
Kjell Martin Mølster, Marie Guionie, Patrick Mutter, Jean-Baptiste Dherbecourt, Jean-Michel Melkonian, Xavier Délen, Andrius Zukauskas, Carlota Canalias, Fredrik Laurell, Patrick Georges, Myriam Raybaut, Antoine Godard, Valdas Pasiskevicius
Publikováno v:
Optica High-brightness Sources and Light-driven Interactions Congress 2022.
Precision-tunable mJ, nanosecond pulses at 1981.1 nm and 2145.6 nm are generated at 5kHz repetition with an efficiency of 70% in a cavity-free arrangement using a PPRKTP BWOPO pumped by a narrowband DPSSL at 1030nm.
Autor:
Guillaume Aoust, J.-M. Melkonian, Myriam Raybaut, Antoine Godard, Raphaël Lévy, Maxime Duquesnoy
Publikováno v:
Applied Physics B-Laser and Optics
Applied Physics B-Laser and Optics, Springer Verlag, 2021, 127 (11), pp.150. ⟨10.1007/s00340-021-07699-2⟩
Applied Physics B-Laser and Optics, Springer Verlag, 2021, 127 (11), pp.150. ⟨10.1007/s00340-021-07699-2⟩
International audience; We report on the use of a radial acoustic resonator to increase the acoustic signal of a quartz enhanced photoacoustic spectroscopy (QEPAS) sensor. This approach is an attractive alternative to usual configurations based on mi
Autor:
Antoine Godard, R. Santagata, Julien Totems, Patrick Chazette, M. Strotkamp, H. Schäfer, Vincent Lebat, S. Rapp, Jonas Hamperl, Cyrille Flamant, Myriam Raybaut, J.-M. Melkonian, Harald Sodemann, D. Heinecke, J. F. Geus, Jean-Baptiste Dherbecourt, Hans Christian Steen-Larsen, Valdas Pasiskevicius, Marine Dalin
Publikováno v:
Proceedings SPIE 11852, International Conference on Space Optics — ICSO 2021
Proceedings SPIE 11852, International Conference on Space Optics — ICSO 2021, Mar 2021, Online Only, France. ⟨10.1117/12.2599326⟩
International Conference on Space Optics — ICSO 2021
International Conference on Space Optics — ICSO 2021, Mar 2021, Online Only, United States. pp.118521U, ⟨10.1117/12.2599326⟩
International Conference on Space Optics — ICSO 2020
Proceedings SPIE 11852, International Conference on Space Optics — ICSO 2021, Mar 2021, Online Only, France. ⟨10.1117/12.2599326⟩
International Conference on Space Optics — ICSO 2021
International Conference on Space Optics — ICSO 2021, Mar 2021, Online Only, United States. pp.118521U, ⟨10.1117/12.2599326⟩
International Conference on Space Optics — ICSO 2020
International audience; We report on the current design and preliminary developments of the airborne Lidar Emitter and Multi-species greenhouse gases Observation iNstrument (LEMON), which is aiming at probing H2O and its isotope HDO at 1982 nm, CO2 a