Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Joël Benoist"'
Autor:
Agnès Desfarges-Berthelemot, Alain Barthélémy, Raphael Florentin, Vincent Kermène, Joël Benoist
Publikováno v:
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Controlling the output beam of a multimode fiber (MMF) is quite a hot topic currently because it offers several attractive perspectives. Among the various technics used to shape the output beam of a multimode fiber, the adaptive approaches rely on a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e8dd891af7cb03190f0be4d39d00b2b
https://doi.org/10.1109/cleoe-eqec.2017.8087007
https://doi.org/10.1109/cleoe-eqec.2017.8087007
Publikováno v:
Computational Optimization and Applications
Computational Optimization and Applications, Springer Verlag, 2014, 59 (3), pp.405-433. ⟨10.1007/s10589-014-9679-3⟩
Computational Optimization and Applications, Springer Verlag, 2014, 59 (3), pp.405-433. ⟨10.1007/s10589-014-9679-3⟩
International audience; The paper proposes a primal-dual algorithm for solving an equality constrained minimization problem. The algorithm is a Newton-like method applied to a sequence of perturbed optimality systems that follow naturally from the qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::925d2dd8d6fb836eb7d37bf028da1b49
https://doi.org/10.1007/s10589-014-9679-3
https://doi.org/10.1007/s10589-014-9679-3
Autor:
Agnès Desfarges-Berthelemot, Alain Barthélémy, Raphael Florentin, Vincent Kermène, Joël Benoist
Publikováno v:
Conference on Lasers and Electro-Optics
Conference on Lasers and Electro-Optics, Jun 2016, San Jose, United States
Conference on Lasers and Electro-Optics, Jun 2016, San Jose, United States
Focused light spots at the output of a multimode fiber amplifier have been shaped by profiling the input signal wavefront using adaptive optimization, despite of mode coupling, mode dependent gain and saturation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::067d7d6b638a7ec2b833e4ba8d54b94c
https://hal.archives-ouvertes.fr/hal-02477065
https://hal.archives-ouvertes.fr/hal-02477065
Autor:
David Kabeya, Marc Fabert, Agnès Desfarges-Berthelemot, Alain Barthélémy, Vincent Kermène, Joël Benoist
Publikováno v:
Conference on Lasers and Electro-Optics
Conference on Lasers and Electro-Optics, Jun 2016, San Jose, United States
Conference on Lasers and Electro-Optics, Jun 2016, San Jose, United States
A new laser beam phase-locking method based on phase-intensity mapping associated with an iterative optimization algorithm is experimentally demonstrated. A numerical analysis shows its capability to combine efficiently large arrays of laser beams.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb58499f49263efab2118163029a6d97
https://doi.org/10.1364/cleo_si.2016.stu1m.2
https://doi.org/10.1364/cleo_si.2016.stu1m.2
Publikováno v:
Journal of Approximation Theory
Journal of Approximation Theory, Elsevier, 2010, 162, pp.2004-2020
Journal of Approximation Theory, Elsevier, 2010, 162, pp.2004-2020
We describe the theoretical solution of an approximation problem that uses a finite weighted sum of complex exponential functions. The problem arises in an optimization model for the design of a telescope array occurring within optical interferometry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fa8e756e37fbc245d4a8a4bce77c22b
Autor:
Elsa Bousquet, Joël Benoist, Serge Olivier, François Reynaud, Laurent Bouyeron, Laurent Delage, Paul Armand
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 408:1886-1896
In this paper, we report the first experimental demonstration of a Temporal HyperTelescope (THT). Our breadboard including 8 telescopes is firstly tested in a manual cophasing configuration on a 1D object. The Point Spread Function (PSF) is measured
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0df9c7daa4a50d2fa829442e2cd4d736
https://doi.org/10.1111/j.1365-2966.2010.17256.x
https://doi.org/10.1111/j.1365-2966.2010.17256.x
Autor:
Joël Benoist, Paul Armand
Publikováno v:
Mathematical Programming, Series A
Mathematical Programming, Series A, Springer, 2008, 115 (2), pp.199-222
Mathematical Programming, Series A, Springer, 2008, 115 (2), pp.199-222
We prove a new local convergence property of some primal-dual methods for solving nonlinear optimization problems. We consider a standard interior point approach, for which the complementarity conditions of the original primal-dual system are perturb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::164e0232c4513602caaa8089af5f4840
https://doi.org/10.1007/s10107-007-0136-2
https://doi.org/10.1007/s10107-007-0136-2
Autor:
Joël Benoist, Alain Barthélémy, Agnès Desfarges-Berthelemot, Marc Fabert, David Kabeya, Vincent Kermène
Publikováno v:
Optics Express
Optics Express, Optical Society of America-OSA Publishing, 2015, 23 (24), ⟨10.1364/OE.23.031059⟩
Optics Express, Optical Society of America-OSA Publishing, 2015, 23 (24), ⟨10.1364/OE.23.031059⟩
International audience; A new approach is proposed for the adaptive phase-locking of a set of parallel laser beams. It is based on an optical conversion of phase differences in the array into an intensity pattern which feeds an optimization algorithm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f2e0649a138c5605dea127468458e16
https://hal.archives-ouvertes.fr/hal-01285286
https://hal.archives-ouvertes.fr/hal-01285286
Autor:
Joël Benoist
Publikováno v:
Journal of Global Optimization
Journal of Global Optimization, Springer Verlag, 2015, 63 (2), pp.363-380. ⟨10.1007/s10898-015-0296-1⟩
Journal of Global Optimization, Springer Verlag, 2015, 63 (2), pp.363-380. ⟨10.1007/s10898-015-0296-1⟩
International audience; In this paper, we solve a conjecture proposed by Borwein and Sims (Fixed-point algorithms for inverse problems in science and engineering, Springer optimization and its applications, 2011) in a Hilbert space setting. For the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72c061960e802a59ea8071888b5a9daf
https://hal.archives-ouvertes.fr/hal-01313714
https://hal.archives-ouvertes.fr/hal-01313714
Autor:
Joël Benoist
Publikováno v:
Optimization. 52:145-152
The aim of the article is to characterize the locally Lipschitz vector-valued functions which are K -quasiconvex with respect to a closed convex cone K in the sense that the sublevel sets are convex. Our criteria are written in terms of a K -quasimon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e4f9949eb27fadc17a4266922e76b90
https://doi.org/10.1080/0233193031000079874
https://doi.org/10.1080/0233193031000079874