145 citations · 524 across the 11 of their papers we have counts for
11 papers · 1 filter
Experimental demonstration of a simple free-space loss model for diffuse reflections in guided-mode LiDAR
Quentin Baudenon, Ben Hopkins, Cibby Pulikkaseril
The growing use of photonic integrated circuits in light detection and ranging (LiDAR) sensors has made the speckle and phase distribution of the reflected light relevant for coupl…
Collective Resonances in Nanoparticle Oligomers
Ben Hopkins
The study of nanostructured artificial media for optics has expanded rapidly over the last few decades, coupled with improvements of fabrication technology that have enabled invest…
Optical chirality from dark-field illumination of planar plasmonic nanostructures
Yongsop Hwang, Ben Hopkins, Dapeng Wang +4
Dark-field illumination is shown to make planar chiral nanoparticle arrangements exhibit circular dichroism in extinction analogous to true chiral scatterers. Circular dichrosim is…
Nonlinear anisotropic dielectric metasurfaces for ultrafast nanophotonics
Giuseppe Della Valle, Ben Hopkins, Lucia Ganzer +7
We report on the broadband transient optical response from anisotropic nanobrick amorphous silicon particles, exhibiting Mie-type resonances. A quantitative model is developed to i…
Active tuning of high-Q dielectric metasurfaces
Matthew Parry, Andrei Komar, Ben Hopkins +7
We demonstrate the active tuning of all-dielectric metasurfaces exhibiting high-quality factor (high-Q) resonances. The active control is provided by embedding the asymmetric silic…
Interplay of magnetic responses in all-dielectric oligomers to realize magnetic Fano resonances
Ben Hopkins, Dmitry S. Filonov, Andrey E. Miroshnichenko +3
We study the interplay between collective and individual optically-induced magnetic responses in quadrumers made of identical dielectric nanoparticles. Unlike their plasmonic count…
All-Dielectric Nanophotonic Structures: Exploring the Magnetic Component of Light
Ben Hopkins, Andrey E. Miroshnichenko, Yuri S. Kivshar
We discuss nanophotonic structures composed of high-index dielectric nanoparticles and present several basic approaches for numerical study of their collective optical response. We…
Hybridization and the origin of the Fano resonances in symmetric nanoparticle trimers
Ben Hopkins, Dmitry S. Filonov, Stanislav B. Glybovski +1
We study the light scattering by plasmonic and dielectric symmetric trimers to investigate the existence of polarization-independent Fano resonances. Plasmonic hybridization theory…
Circular dichroism induced by Fano resonances in planar chiral oligomers
Ben Hopkins, Alexander N. Poddubny, Andrey E. Miroshnichenko +1
We present a general theory of circular dichroism in planar chiral nanostructures with rotational symmetry. It is demonstrated, analytically, that the handedness of the incident fi…
Revisiting the physics of Fano resonances for nanoparticle oligomers
Ben Hopkins, Alexander N. Poddubny, Andrey E. Miroshnichenko +1
We present a new and robust approach for interpreting the physics of Fano resonances in planar oligomer structures of both metallic and dielectric nanoparticles. We reveal a key me…
Optically-isotropic responses induced by discrete rotational symmetry of nanoparticle clusters
Ben Hopkins, Wei Liu, Andrey E. Miroshnichenko +1
Fostered by the recent progress of the fields of plasmonics and metamaterials, the seminal topic of light scattering by clusters of nanoparticles is attracting enormous renewed int…