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(96) Production(s) de FELBACQ D.
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Electrostatic resonances in sign shifting materials 
Auteur(s): Felbacq D., Guizal B., Zolla Frederic, Kling Emmanuel
Conférence invité: SPIE OPTICS and PHOTONICS (San Diego, US, 2011-08-21)
Ref HAL: hal-00807809_v1
Exporter : BibTex | endNote
Résumé: On montre l'existence de résonances électrostatiques dans le comportement basse fréquence de réseaux bidimensionnels métalliques.
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Excitonic states and their wave functions in anisotropic materials: a computation using the finite element method and its application to AlN
Auteur(s): Gil B., Felbacq D., Guizal B., Bouchitté Guy
(Article) Publié:
Physica Status Solidi B, vol. 249 p.455 (2012)
Texte intégral en Openaccess : 
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Exciton binding energy in chalcopyrite semiconductors
Auteur(s): Gil B., Felbacq D., Chichibu Shigefusa
(Article) Publié:
-Physical Review B Condensed Matter And Materials Physics (1998-2015), vol. 85 p.075205 (2012)
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Crucial influence of evanescent waves on the electromagnetic properties of metamaterials
Auteur(s): Felbacq D., Guizal B., Cabuz A.
(Article) Publié:
Journal Of Nanophotonics, vol. 4 p.0435220 (2010)
Ref HAL: hal-00813335_v1
DOI: 10.1117/1.3520508
WoS: 000286060700001
Exporter : BibTex | endNote
Résumé: The recent interest in the imaging possibilities of photonic crystals (superlensing, superprism, optical mirages, etc.) call for a detailed analysis of beam propagation inside a finite periodic structure. An answer to the following question was sought: “Where does the beam emerge?’ We found that, contrary to common knowledge, it is not always true that the shift of a beam is given by the normal to the dispersion curve. This phenomenon can be explained in terms of evanescent waves and a renormalized diagram yields the correct direction.
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Quantitative interpretation of the excitonic splitting in aluminum nitride
Auteur(s): Gil B., Guizal B., Felbacq D., Bouchitté Guy
(Article) Publié:
The European Physical Journal Applied Physics, vol. 53 p.3 (2011)
Texte intégral en Openaccess : 
Ref HAL: hal-00633617_v1
DOI: 10.1051/epjap/2010100448
WoS: 000288591700003
Exporter : BibTex | endNote
10 Citations
Résumé: We address the interpretation of the splitting between the ground state excitonic transition which indicates the energy of the lowest direct band gap in AlN bulk films and epilayers, and a 36-38 meV higher energy companion. We demonstrate that this splitting is consistent with the initial interpretation in terms of 1s - 2s excitonic splitting by using a calculation of the exciton binding energy which includes mass anisotropy and anisotropy of the dielectric constant. Analytical expressions are proposed to compute the evolution of 1s and 2s excitonic energies using an anisotropy parameter . We show that the values of the dielectric constant that are required to fit the data are 8.7 and 10, values different from the couple of values 7.33 and 8.45 erroneously obtained after a fitting procedure using a spherical description of the long range Coulomb interaction and the classical textbook n-2 spectrum of the excitonic eigenstates. Starting from now, our values are the recommended ones.
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Giant Rabi splitting between localized mixed plasmon-exciton states in a two-dimensional array of nanosize metallic disks in an organic semiconductor
Auteur(s): Bellessa Joel, Symonds C., Vynck Kevin, Lemaitre A., Brioude A., Beaur L., Plenet J. C., Viste P., Felbacq D., Cambril E., Valvin P.
(Article) Publié:
Physical Review B, vol. 80 p.033303 (2009)
Ref HAL: hal-00437967_v1
DOI: 10.1103/PhysRevB.80.033303
WoS: 000268617800017
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109 Citations
Résumé: We study localized surface plasmons in strong coupling with excitons of organic semiconductors. The plasmons are localized in lithographed silver nanodisks organized in square array. A giant Rabi splitting energy of 450 meV is obtained, and typical behaviors of mixed states, i.e., anticrossing of their energies and crossing of their linewidths, are observed. Three-dimensional finite-difference time-domain simulations and coupled oscillator calculations are used to analyze and corroborate the experimental results.
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RESONANT HOMOGENIZATION OF A DIELECTRIC METAMATERIAL
Auteur(s): Felbacq D., Guizal B., Bouchitte G., Bourel C.
Conference: 4th Workshop on Metamaterials and Special Materials for Electromagnetic Application and TLC (Naples, IT, 2008-12-18)
Actes de conférence: MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol. 51 p.2695-2701 (2009)
Ref HAL: hal-00437968_v1
Exporter : BibTex | endNote
Résumé: We investigate numerically and theoretically the homageneous properties of a metamaterial made of nanorods with a high dielectric constant. The rods have inner resonances leading to an effective magnetic behavior. The influence of various parameters, such as the wavelength, the angle of incidence, and the filling ratio is quantified by means of rigorous numerical computations. (C) 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2695-2701, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24717
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