Zobrazeno 1 - 10 of 184 pro vyhledávání: '"O Gobert"'
1
Akademický článek
Phase distortions of attosecond pulses produced by resonance-enhanced high harmonic generation
Autor: S Haessler, V Strelkov, L B Elouga Bom, M Khokhlova, O Gobert, J-F Hergott, F Lepetit, M Perdrix, T Ozaki, P Salières
Publikováno v: New Journal of Physics, Vol 15, Iss 1, p 013051 (2013)
Resonant enhancement of high harmonic generation can be obtained in plasmas containing ions with strong radiative transitions resonant with harmonic orders. The mechanism for this enhancement is still debated. We perform the first temporal characteri
Externí odkaz: https://doaj.org/article/d92e0c1140de4884b879bd3a0b672489
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2
Akademický článek
Synthesis and characterization of attosecond light vortices in the extreme ultraviolet
Autor: R. Géneaux, A. Camper, T. Auguste, O. Gobert, J. Caillat, R. Taïeb, T. Ruchon
Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-6 (2016)
Twisted light beams have found several applications in the infrared and visible regime, but reaching the extreme ultraviolet has been difficult due to lack of sources. Here the authors report generation of helically shaped extreme ultraviolet trains
Externí odkaz: https://doaj.org/article/a990fa914502457fbe4f772922b8231f
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4
Controlling the velocity of a femtosecond laser pulse using refractive lenses
Autor: Spencer W. Jolly, Antoine Jeandet, O. Gobert, Fabien Quéré
Publikováno v: Optics Express
Optics Express, Optical Society of America-OSA Publishing, 2020, 28 (4), pp.4888-4897. ⟨10.1364/OE.384512⟩
Optics Express, 2020, 28 (4), pp.4888-4897. ⟨10.1364/OE.384512⟩
International audience; The combination of temporal chirp with a simple chromatic aberration known as longitudinal chromatism leads to extensive control over the velocity of laser intensity in the focal region of an ultrashort laser beam. We present
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5495f96936a34175f2421847b1b0f3dc
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5
Transfer of Orbital Angular Momentum in High Harmonic Generation using two Driving Beams
Autor: Thierry Ruchon, Giovanni De Ninno, O. Gobert, David Bresteau, C Chappuis, Thierry Auguste, David Gauthier, Romain Géneaux
Publikováno v: Scopus-Elsevier
Light beams may carry both a spin and an orbital angular momentum (OAM). While the former is associated to their polarization state, the latter stems from the geometrical properties of their wavefront. In their prototypical form, beams with OAM have
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3d3214fa3f955d76d1c369f12b78cbe
https://doi.org/10.1109/cleoe-eqec.2019.8873108
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6
High-order harmonic generation in an active grating
Autor: O. Gobert, Thierry Auguste, David Bresteau, Thierry Ruchon, C Chappuis
Publikováno v: Physical Review A
Physical Review A, American Physical Society, 2019, 99 (3), ⟨10.1103/PhysRevA.99.033806⟩
Physical Review A : Atomic, molecular, and optical physics [1990-2015]
Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2019, 99 (3), ⟨10.1103/PhysRevA.99.033806⟩
International audience; We study theoretically and experimentally high-order harmonic generation (HHG) using two noncollinear driving fields focused in gases. We show that these two fields form a nonstationary blazed active grating in the generation
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4aadf2b5aaa5f46e94bebd7a9e3364c
https://hal-cea.archives-ouvertes.fr/cea-02096281
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8
Multipronged mapping to the dynamics of a barium atom deposited on argon clusters
Autor: Jean-Michel Mestdagh, Marc-André Gaveau, Benoît Soep, O. Gobert, M. Briant, Lionel Poisson, R. Maksimenka, S. Awali
Publikováno v: ResearcherID
The dynamics of an electronically excited barium atom deposited at the surface of an Ar≈500 cluster was explored in a multipronged approach which associates information from frequency-resolved nanosecond experiments and information from femtosecond
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2c97511bd982407a675bad5243ed109
https://doi.org/10.1039/c6cp04878a
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9
Space-time metrology and control of high-power femtosecond lasers
Autor: Fabien Quéré, O. Gobert, A. Sainte-Marie, Antoine Jeandet, A. Borot, G. Pariente
Publikováno v: 2017 IEEE Photonics Conference (IPC)
One of the major achievements of optics in recent decades has been the generation of light pulses of extremely short duration, down to a few femtoseconds in the 1990's and tens of attoseconds in the past few years. Throughout the development of these
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::766d8843820793ac1e0f04180ad81cca
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10
Space–time characterization of ultra-intense femtosecond laser beams
Autor: V. Gallet, Antonin Borot, O. Gobert, G. Pariente, Fabien Quéré
Publikováno v: Nature Photonics
Nature Photonics, Nature Publishing Group, 2016, 10, pp.547-553. ⟨10.1038/nphoton.2016.140⟩
Nature Photonics, 2016, 10, pp.547-553. ⟨10.1038/nphoton.2016.140⟩
Femtosecond lasers can now deliver ultrahigh intensities at focus, making it possible to induce relativistic motion of charged particles with light and opening the way to new generations of compact particle accelerators and X-ray sources. With diamet
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::390cb41f4c46eea35aa10087828e16d1
https://hal-cea.archives-ouvertes.fr/cea-01427209
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