72 citations · 208 across the 12 of their papers we have counts for
9 papers · 1 filter
All-optical programming of polarization singularities in a photonic-crystal laser
Abhishek Padhy, Zhiyi Yuan, Mohammed Hamdad +11
Singular optics has emerged as an important research area with diverse applications, yet controlling optical singularities in nanophotonic emitters remains largely constrained by t…
Exploring phase sensitivity and limit of detection near the critical coupling of metasurfaces and its phase singularity
L. Berguiga, T. Girerd, X. Letartre +4
It is commonly accepted that phase singularities in refractive index sensors can provide highly sensitive detection. To address this issue, we studied the phase sensitivity and the…
A formalism for giant Goos-Hänchen shift in metasurface sensors with phase singularity
Lotfi Berguiga, Sébastien Cueff, Lydie Ferrier +4
The Goos-Hänchen (GH) shift becomes giant in resonant photonic structures, making it promising for refractive index sensors with ultimate sensitivities. We provide here a complete…
Spatially-Controlled Planar Guided Crystallization of Low-Loss Phase Change Materials for Programmable Photonics
Fouad Bentata, Arnaud Taute, Capucine Laprais +14
Photonic integrated devices are progressively evolving beyond passive components into fully programmable systems, notably driven by the progress in chalcogenide phase-change materi…
Ultimate Phase Sensitivity in Surface Plasmon Resonance Sensors by Tuning Critical Coupling with Phase Change Materials
Lotfi Berguiga, Lydie Ferrier, Cécile Jamois +3
Plasmonic sensing is an established technology for real-time biomedical diagnostics and air-quality monitoring. While intensity and wavelength tracking are the most commonly used i…
Reconfigurable Flat Optics with Programmable Reflection Amplitude Using Lithography-Free Phase-Change Materials Ultra Thin Films
Sebastien Cueff, Arnaud Taute, Antoine Bourgade +6
We experimentally demonstrate a very large dynamic optical reflection modulation from a simple unpatterned layered stack of phase-change materials ultrathin films. Specifically, we…
Unified Weak-to-Strong Coupling Transitions and Radiation Interference Induced by Vertical-Symmetry Breaking in Photonic Crystal Slabs
Huy Hoang Chu, Raphael Mermet-Lyaudoz, Florian Dubois +10
Vertical-symmetry breaking provides a versatile means of coupling leaky photonic-crystal resonances that are otherwise protected by opposite out-of-plane parity. Here, we develop a…
Super Bound States in the Continuum on Photonic Flatbands: Concept, Experimental Realization, and Optical Trapping Demonstration
Ngoc Duc Le, Paul Bouteyre, Ali Kheir-Aldine +7
In this work, we theoretically propose and experimentally demonstrate the formation of a super bound state in a continuum (BIC) on a photonic crystal flat band. This unique state s…
Tamm plasmon Photonic Crystals : from Bandgap Engineering to Defect Cavity
Lydie Ferrier, Hai Son Nguyen, Cécile Jamois +4
We report for the first time the bandgap engineering of Tamm plasmon photonic crystals - Tamm plasmon structures of which the metalic layer is periodically patterned into lattice o…