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(96) Production(s) de FELBACQ D.
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Theory of negative index in periodic and random photonic crystals - art. no. 61950I 
Auteur(s): Felbacq D., Bouchitte Guy
Conference: Conference on Nanophotonics (Strasbourg (FRANCE), FR, 2006-04-03)
Actes de conférence: Nanophotonics, vol. 6195 p.I1950-I1950 (2006)
Ref HAL: hal-00437976_v1
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Résumé: We homogenize a 2D dielectric photonic crystal by means of a multiple scale approach. We show that if the rods constituting the crystal have Mie resonances at large enough wavelengths, the crystal presents an effective permeability exhibiting anomalous dispersion. When embedding in a negative permittivity medium, this leads to a negative index material.
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Second-harmonic emission in two-dimensional photonic crystals
Auteur(s): Centeno Emmanuel, Felbacq D.
(Article) Publié:
Journal Of The Optical Society Of America B, vol. 23 p.2257-2264 (2006)
Ref HAL: hal-00437964_v1
DOI: 10.1364/JOSAB.23.002257
WoS: 000244078700035
Exporter : BibTex | endNote
24 Citations
Résumé: A second-harmonic superprism effect in 2D photonic crystals is demonstrated numerically. A full control of the second-harmonic emission is achieved by tailoring the photonic dispersion curves. This effect is demonstrated by using a multiple scattering method generalized to the second-harmonic generation. We show that small angular variations or a wavelength tuning of the fundamental field induce large shifts of the second-harmonic emission (similar to 90 degrees). (c) 2006 Optical Society of America.
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Mesoscopic magnetism in dielectric photonic crystal metamaterials: topology and inhomogeneous broadening
Auteur(s): Felbacq D., Mortensen Niels, Xiao Sanshui
(Article) Publié:
Journal Of The European Optical Society:rapid Publications, vol. 1 p.06019 (2006)
Ref HAL: hal-00385856_v1
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Résumé: We consider metamaterials made from a two-dimensional dielectric rod-type photonic crystal. The magneticr esponse is studied within the recently developed homogenization theory and we in particular study the effects of topology and inhomogeneous broadening. While topology itself mainly affects the Mie resonance frequency we find that the dispersion in the topological radius R of the dielectric rods may lead to significant inhomogeneous broadening and suppression of the negative-µ phenomena for δR/R0 >>ε′′/ε′, with ε=ε′ +iε′′ being the relative dielectric function of the rods.
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Left-handed media and homogenization of photonic crystals
Auteur(s): Felbacq D., Bouchitte G.
(Article) Publié:
Optics Letters, vol. 30 p.1189-1191 (2005)
Ref HAL: hal-00437977_v1
PMID 15943305
DOI: 10.1364/OL.30.001189
WoS: 000229011800035
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37 Citations
Résumé: Using homogenization theory, we derive the effective permittivity and permeability of a wire-mesh photonic crystal from first principles. We show that this structure does not lead to a left-handed medium when it is embedded in a matrix with a negative μ, but that resonators in a medium with a negative E do form a left-handed medium in the correct range of frequencies. © 2005 Optical Society of America.
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Theory of mesoscopic magnetism in photonic crystals
Auteur(s): Felbacq D., Bouchitte G.
(Article) Publié:
Physical Review Letters, vol. 94 p.183902 (2005)
Texte intégral en Openaccess : 
Ref HAL: hal-00437978_v1
PMID 15904370
DOI: 10.1103/PhysRevLett.94.183902
WoS: 000229074300025
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84 Citations
Résumé: We provide a rigorous theoretical basis for the artificial magnetic activity of metamaterials near resonances. Our approach is a renormalization-based scheme that authorizes a completely general theory. The major result is an explicit expression of the effective permeability, in terms of resonant frequencies. The theoretical results are checked numerically, and we give applications of our theory to left-handed media and to the solution of the Pokrovski-Efros paradox.
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Negative refraction in periodic and random photonic crystals
Auteur(s): Felbacq D., Bouchitte G.
(Article) Publié:
New Journal Of Physics, vol. 7 p.159 (2005)
Texte intégral en Openaccess : 
Ref HAL: hal-00437979_v1
DOI: 10.1088/1367-2630/7/1/159
WoS: 000231067700002
Exporter : BibTex | endNote
47 Citations
Résumé: We present a theory of the artificial magnetic activity in a two-dimensional (2D) dielectric photonic crystal. We show, by using a multiple-scale approach, that if the rods constituting the crystal have Mie resonances at large enough wavelengths, the crystal can be characterized by an effective permeability exhibiting anomalous dispersion. The theoretical results are checked numerically for periodic and random photonic crystals.
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Multiple wavelengths filtering of light through inner resonances
Auteur(s): Felbacq D., Larciprete Mc, Sibilia C., Bertolotti M., Scalora M.
(Article) Publié:
Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 72 p.066610 (2005)
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