248 citations · 345 across the 8 of their papers we have counts for
5 papers · 1 filter
Three-dimensional confinement of light in photonic crystals without bandgaps
Manxi Shi, Sachin Vaidya, Ali Ghorashi +2
We demonstrate that confinement of light in three dimensions is possible in photonic crystals without a complete photonic bandgap. Our approach exploits symmetry-protected quadrati…
Plasmonic coated scatterers for tunable coherent perfect absorption
Ali Ghorashi, Ali H. Alhulaymi, A. Douglas Stone
We derive, in closed-form, the surface conductivity required for coated subwavelength-scale spherical and cylindrical scatterers to perfectly absorb incident coherent light of fixe…
Symbolic Learning of Topological Bands in Photonic Crystals
Ali Ghorashi, Sachin Vaidya, Ziming Liu +4
Topological photonic crystals (PhCs) that support disorder-resistant modes, protected degeneracies, and robust transport have recently been explored for applications in waveguiding…
Highly-confined and tunable plasmonics based on two-dimensional solid-state defect lattices
Ali Ghorashi, Nicholas Rivera, Bowen Shi +4
Plasmons, collective excitations of electrons in solids, are associated with strongly confined electromagnetic fields, with wavelengths far below the wavelength of photons in free…
A general framework for scintillation in nanophotonics
Charles Roques-Carmes, Nicholas Rivera, Ali Ghorashi +12
Bombardment of materials by high-energy particles (e.g., electrons, nuclei, X- and -ray photons) often leads to light emission, known generally as scintillation. Scintillation i…