GENEVET , Patrice

In this thesis, I address the formation of localized structures in a semiconductor lasing system based on two mutually coupled microresonators, one playing the role of an amplifier while the second behaves as saturable absorber. I report on the generation and control of independent laser solitons which are bright intensity peaks over an...

International audience

International audience

The Pancharatnam-Berry (PB) metasurfaces have been considered as the innovative optical devices for efficient manipulation of both the phase and the polarization of electromagnetic field. Here, we present the simultaneous generation of circularly-, elliptically-, and linearly-polarized states from a single linearly-polarized incident beam by...

The Pancharatnam-Berry (PB) metasurfaces have been considered as the innovative optical devices for efficient manipulation of both the phase and the polarization of electromagnetic field. Here, we present the simultaneous generation of circularly-, elliptically-, and linearly-polarized states by a simplest PB metassurface with one-dimensional...

We report on experimental observation of localized structures in two mutually coupled broad-area semiconductor resonators. These structures coexist with a dark homogeneous background and they have the same properties as cavity solitons without requiring the presence of a driving beam into the system. They can be switched individually on and off...

During the last decade, the field of metasurfaces has drawn significant attention due to the unprecedented control over the optical properties of light in a very short propagation distance with high resolution. These devices consist of nanostructures defined within a single layer of metal or dielectric materials. Recently, several optimization...

This is an introduction to the special issue "Inverse Design of nanophotonics devices and materials" in the journal "Photonics and Nanostructures: Fundamentals and Applications" which aims at providing a concise overview of the most recent developments in this field.

Beyond the chirality of light associated to polarization or spin, light beams can carry an additional orbital angular momentum due to the helicoidal structure of their phase front. This property, if combined with light localization could give rise to localized optical vortices, whose existence in nonlinear and dissipative optical systems is...

International audience

Rapid developments in the emerging field of stretchable and conformable photonics necessitate analytical expressions for boundary conditions at metasurfaces of arbitrary geometries. Here, we introduce the concept of conformal boundary optics: a design theory that determines the optical response for designer input and output fields at such...