6 papers
Direct evidence of negative refraction at media with negative εand μ
Didier Felbacq
We analyze wave scattering by an interface between a positive refractive index medium and a Left-Handed Material. We show that the negative refraction effect can be deduced directl…
Bloch waves and non-propagating modes in photonic crystals
D. Felbacq, R. Smaali
We investigate the propagation of electromagnetic waves in finite photonic band gap structures. We analyze the phenomenon of conduction and forbidden bands and we show that two reg…
Electromagnetic diffraction by a circular cylinder with longitudinal slots
B. Guizal, D. Felbacq
A method is presented to investigate diffraction of an electromagnetic plane wave by an infinitely thin infinitely conducting circular cylinder with longitudinal slots. It is based…
two-waves approximation for reflected and transmitted energy in photonic crystals
B. Guizal, D. Felbacq, R. Smaali
We study electromagnetic waves scattering by a 2D photonic crystal made of a stack of diffraction gratings. In case where there are only two propagative modes in the crystal, we de…
Do Fresnel coefficients exist?
D. Felbacq, B. Guizal, F. Zolla
The starting point of the article is the puzzling fact that one cannot recover the Fresnel coefficients by letting tend the width of a slab to infinity. Without using the so-called…
Ultra-refraction phenomena in Bragg mirrors
Didier Felbacq, Brahim Guizal, Frederic Zolla
We show numerically for the first time that ultra-refractive phenomena do exist in one-dimensional photonic crystals: we exhibit the main features of ultra-refraction, that is the…