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Beam steering with dielectric metalattices
Wei Liu, Andrey E. Miroshnichenko
We study optical wave manipulations through high-index dielectric metalattices in both diffractionless metasurface and diffractive metagrating regimes. It is shown that the collect…
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…
Revisit Kerker's conditions by means of the phase diagram
Jeng Yi Lee, Andrey E. Miroshnichenko, Ray-Kuang Lee
For passive electromagnetic scatterers, we explore a variety of extreme limits on directional scattering patterns in phase diagram, regardless of details on the geometric configura…
Giant field enhancement in high-index dielectric subwavelength particles
Polina Kapitanova, Vladimir Ternovski, Andrey Miroshnichenko +4
Besides purely academic interest, giant field enhancement within subwavelength particles at light scattering of a plane electromagnetic wave is important for numerous applications…
Scattering invisibility with free-space field enhancement of all-dielectric nanoparticles
Wei Liu, Andrey E. Miroshnichenko
Simultaneous scattering invisibility and free-space field enhancement have been achieved based on multipolar interferences among all-dielectric nanoparticles. The scattering proper…
White light emission from silicon nanoparticles
Chengyun Zhang, Yi Xu, Jin Liu +7
As one of the most important semiconductors, silicon (Si) has been used to fabricate electronic devices, waveguides, detectors, and solar cells etc. However, its indirect bandgap h…