140 citations · 516 across the 17 of their papers we have counts for
17 papers
Directional silicon nano-antennas for quantum emitter control designed by evolutionary optimization
Romain Hernandez, Peter R. Wiecha, Jean-Marie Poumirol +5
We optimize silicon nano-antennas to enhance and steer the emission of local quantum sources. We combine global evolutionary optimization (EO) with frequency domain electrodynamica…
Kapitza-resistance-like exciton dynamics in atomically flat MoSe-WSe lateral heterojunction
Hassan Lamsaadi, Dorian Beret, Ioannis Paradisanos +13
Being able to control the neutral excitonic flux is a mandatory step for the development of future room-temperature two-dimensional excitonic devices. Semiconducting Monolayer Tran…
Control of light emission of quantum emitters coupled to silicon nanoantenna using cylindrical vector beams
Martin Montagnac, Yoann Brûlé, Aurélien Cuche +11
Light emission of europium (Eu3+) ions placed in the vicinity of optically resonant nanoantennas is usually controlled by tailoring the local density of photon states (LDOS). We sh…
Probing the optical near-field interaction of Mie nanoresonators with atomically thin semiconductors
Ana Estrada-Real, Ioannis Paradisanos, Peter R. Wiecha +10
Optical Mie resonators based on silicon nanostructures allow tuning of light-matter-interaction with advanced design concepts based on CMOS compatible nanofabrication. Optically ac…
Infrared nanoplasmonic properties of hyperdoped embedded Si nanocrystals in the few electrons regime
Meiling Zhang, Jean-Marie Poumirol, Nicolas Chery +13
Using Localized Surface Plasmon Resonance (LSPR) as an optical probe we demonstrate the presence of free carriers in phosphorus doped silicon nanocrystals (SiNCs) embedded in a sil…
Exciton spectroscopy and diffusion in MoSe2-WSe2 lateral heterostructures encapsulated in hexagonal boron nitride
Dorian Beret, Ioannis Paradisanos, Ziyang Gan +17
Chemical vapor deposition (CVD) allows lateral edge epitaxy of transition metal dichalcogenide heterostructures with potential applications in optoelectronics. Critical for carrier…
Magnetic and electric Purcell factor control through geometry optimization of high index dielectric nanostructures
Yoann Brûlé, Peter R. Wiecha, Aurélien Cuche +2
We design planar silicon antennas for controlling the emission rate of magnetic or electric dipolar emitters. Evolutionary algorithms coupled to the Green Dyadic Method lead to dif…
Hyper-doped silicon nanoantennas and metasurfaces for tunable infrared plasmonics
Jean-Marie Poumirol, Clément Majorel, Nicolas Chery +11
We present the experimental realization of ordered arrays of hyper-doped silicon nanodisks, which exhibit a localized surface plasmon resonance. The plasmon is widely tunable in a…
Unveiling the optical emission channels of monolayer semiconductors coupled to silicon nanoantennas
Jean-Marie Poumirol, Ioannis Paradisanos, Shivangi Shree +13
Monolayers (MLs) of transition metal dichalcogenides (TMDs) such as WSe2 and MoSe2 can be placed by dry stamping directly on broadband dielectric resonators, which have the ability…
Design of plasmonic directional antennas via evolutionary optimization
Peter R. Wiecha, Clément Majorel, Christian Girard +4
We demonstrate inverse design of plasmonic nanoantennas for directional light scattering. Our method is based on a combination of full-field electrodynamical simulations via the Gr…
Fano-Resonances in High Index Dielectric Nanowires for Directional Scattering
Peter R. Wiecha, Aurélien Cuche, Houssem Kallel +8
High refractive index dielectric nanostructures provide original optical properties thanks to the occurrence of size- and shape-dependent optical resonance modes. These modes commo…
Enhancement of electric and magnetic dipole transition of rare-earth doped thin films tailored by high-index dielectric nanostructures
Peter R. Wiecha, Clément Majorel, Christian Girard +7
We propose a simple experimental technique to separately map the emission from electric and magnetic dipole transitions close to single dielectric nanostructures, using a few nanom…
Decay Rate of Magnetic Dipoles near Non-magnetic Nanostructures
Peter R. Wiecha, Arnaud Arbouet, Aurélien Cuche +2
In this article, we propose a concise theoretical framework based on mixed field-susceptibilities to describe the decay of magnetic dipoles induced by non--magnetic nanostructures.…
Enhanced nonlinear optical response from individual silicon nanowires
Peter R. Wiecha, Arnaud Arbouet, Houssem Kallel +3
We report about the experimental observation and characterization of nonlinear optical properties of individual silicon nanowires of different dimensions. Our results show that the…
Strongly directional scattering from dielectric nanowires
Peter R. Wiecha, Aurélien Cuche, Arnaud Arbouet +8
It has been experimentally demonstrated only recently that a simultaneous excitation of interfering electric and magnetic resonances can lead to uni-directional scattering of visib…
Evolutionary Multi-Objective Optimisation of Colour Pixels based on Dielectric Nano-Antennas
Peter R. Wiecha, Arnaud Arbouet, Christian Girard +3
The rational design of photonic nanostructures consists in anticipating their optical response from simple models or as variations of reference systems. This strategy is limited wh…
Origin of Second Harmonic Generation from individual Silicon Nanowires
Peter R. Wiecha, Arnaud Arbouet, Christian Girard +2
We investigate Second Harmonic Generation from individual silicon nanowires and study the influence of resonant optical modes on the far-field nonlinear emission. We find that the…