Tailoring third-harmonic diffraction efficiency by hybrid modes in high-Q metasurfaces

KI Okhlopkov, A Zilli, A Tognazzi, D Rocco… - Nano Letters, 2021 - ACS Publications
Metasurfaces are versatile tools for manipulating light; however, they have received little
attention as devices for the efficient control of nonlinearly diffracted light. Here, we …

Morphological evolution and structural study of annealed amorphous-Ge films: Interplay between crystallization and dewetting

S Freddi, G Sfuncia, M Gherardi, G Nicotra… - Materials Science in …, 2024 - Elsevier
In this work, the dewetting process of an amorphous-Ge-based thin film (a-Ge) upon
annealing has been studied, highlighting the morphological and structural properties of the …

Special scattering regimes for conical all-dielectric nanoparticles

AV Kuznetsov, A Canós Valero, HK Shamkhi… - Scientific reports, 2022 - nature.com
All-dielectric nanophotonics opens a venue for a variety of novel phenomena and scattering
regimes driven by unique optical effects in semiconductor and dielectric nanoresonators …

Light Emitting Si‐Based Mie Resonators: Toward a Huygens Source of Quantum Emitters

M Khoury, H Quard, T Herzig, J Meijer… - Advanced Optical …, 2022 - Wiley Online Library
Silicon‐based micro‐and nano‐structures for light management at near‐infrared and visible
frequencies have been widely exploited for guided optics and metasurfaces. However, light …

Strain Engineering of the Electronic States of Silicon‐Based Quantum Emitters

A Ristori, M Khoury, M Salvalaglio… - Advanced Optical …, 2024 - Wiley Online Library
Light‐emitting complex defects in silicon have been considered a potential platform for
quantum technologies based on spin and photon degrees of freedom working at telecom …

Engineering and detection of light scattering directionalities in dewetted nanoresonators through dark-field scanning microscopy

N Granchi, L Fagiani, M Salvalaglio, C Barri… - Optics …, 2023 - opg.optica.org
Dewetted, SiGe nanoparticles have been successfully exploited for light management in the
visible and near-infrared, although their scattering properties have been so far only …

Light scattering features induced by residual layers in dielectric dewetted nanoparticles

N Granchi, L Fagiani, C Barri, A Fedorov… - Optical Materials …, 2023 - opg.optica.org
All-dielectric, sub-micrometric particles obtained through solid state dewetting of thin SiGe-
films have been shown to support Mie resonances together with a high-quality …

[HTML][HTML] Near-field hyper-spectral imaging of resonant Mie modes in a dielectric island

N Granchi, M Montanari, A Ristori, M Khoury… - APL Photonics, 2021 - pubs.aip.org
All-dielectric sub-micrometric particles have been successfully exploited for light
management in a plethora of applications at visible and near-infrared frequencies. However …

Quantum confined stark effect on the linear and nonlinear optical properties of SiGe/Si semi oblate and prolate quantum dots grown in Si wetting layer

Varsha, M Kria, JE Hamdaoui, LM Perez, V Prasad… - Nanomaterials, 2021 - mdpi.com
We have studied the parallel and perpendicular electric field effects on the system of SiGe
prolate and oblate quantum dots numerically, taking into account the wetting layer and …

[HTML][HTML] Linear and nonlinear optical properties of dewetted SiGe islands

L Fagiani, N Granchi, A Zilli, C Barri, F Rusconi… - Optical Materials: X, 2022 - Elsevier
We propose to exploit the natural mechanical instability of thin solid films to form regular
patterns of monocrystalline atomically smooth silicon and germanium nanostructures that …