191 citations · 675 across the 16 of their papers we have counts for
16 papers
On-chip optical twisted bilayer photonic crystal
Haoning Tang, Beicheng Lou, Fan Du +6
Recently, moiré engineering has been extensively employed for creating and studying novel electronic materials in two dimensions. However, its application in nanophotonic systems h…
On-chip Light Trapping in Bilayer Moiré Photonic Crystal Slabs
Haoning Tang, Xueqi Ni, Fan Du +1
There has been remarkable recent progress in the formation of nano-resonators that support ultra-low-loss, compact dielectric photonic crystals with exceptional high-Q modes that o…
Observation of enhanced free-electron radiation from photonic flatband resonances
Yi Yang, Charles Roques-Carmes, Steven E. Kooi +6
Flatbands emerge from a myriad of structures such as Landau levels, Lieb and Kagome lattices, linegraphs, and more recently moire superlattices. They enable unique properties inclu…
Momentum considerations inside near-zero index materials
Michaël Lobet, Iñigo Liberal, Larissa Vertchenko +3
Near-zero-index (NZI) materials, i.e. materials having a phase refractive index close to zero, are known to enhance or inhibit light-matter interactions. Most theoretical derivatio…
Genetic-algorithm-aided ultra-broadband perfect absorbers using plasmonic metamaterials
Alexandre Mayer, Hai Bi, Sarah Griesse-Nascimento +5
Complete absorption of electromagnetic waves is paramount in today's applications, ranging from photovoltaics to cross-talk prevention into sensitive devices. In this context, we u…
Modeling the optical properties of Twisted Bilayer Photonic Crystals
Haoning Tang, Fan Du, Stephen Carr +3
We demonstrate a photonic analog of twisted bilayer graphene that has ultra-flat photonic bands and exhibits extreme slow light behavior. Our twisted bilayer photonic device, which…
Relaxed phase-matching constraints in zero-index waveguides
Justin R. Gagnon, Orad Reshef, Daniel H. G. Espinosa +8
The nonlinear optical response of materials is the foundation upon which applications such as frequency conversion, all-optical signal processing, molecular spectroscopy, and nonli…
Near-Zero Index Photonic Crystals with Directive Bound States in the Continuum
Larissa Vertchenko, Clayton DeVault, Radu Malureanu +2
Near-zero-index platforms arise as a new opportunity for light manipulation with boosting of optical nonlinearities, transmission properties in waveguides and constant phase distri…
Low-loss Zero-Index Materials
Haoning Tang, Clayton DeVault, Phil Camayd-Munoz +7
Materials with a zero refractive index support electromagnetic modes that exhibit stationary phase profiles. While such materials have been realized across the visible and near-inf…
On modifications of fundamental radiative processes in near-zero-index media of various dimensions
Lobet Michaël, Iñigo Liberal, Erik N. Knall +5
Spontaneous emission, stimulated emission and absorption are the three fundamental radiative processes describing light-matter interactions. Here, we theoretically study the behavi…
Topology-optimized Dual-Polarization Dirac Cones
Zin Lin, Lysander Christakis, Yang Li +3
We apply a large-scale computational technique, known as topology optimization, to the inverse design of photonic Dirac cones. In particular, we report on a variety of photonic cry…
Extracting losses from asymmetric resonances in micro-ring resonators
Orad Reshef, Michael G. Moebius, Eric Mazur
Propagation losses in micro-ring resonator waveguides can be determined from the shape of individual resonances in their transmission spectrum. The losses are typically extracted b…
Monolithic CMOS-compatible zero-index metamaterials
Daryl I. Vulis, Yang Li, Orad Reshef +5
Zero-index materials exhibit exotic optical properties that can be utilized for integrated-optics applications. However, practical implementation requires compatibility with comple…
On-chip all-dielectric fabrication-tolerant zero-index metamaterials
Shota Kita, Yang Li, Philip Muñoz +5
Zero-index metamaterials (ZIMs) offer unprecedented ways to manipulate the flow of light, and are of interest for wide range of applications including optical cloaking, super-coupl…
Integrated TiO2 resonators for visible photonics
Jennifer T. Choy, Jonathan D. B. Bradley, Parag B. Deotare +4
We demonstrate waveguide-coupled titanium dioxide (TiO2) racetrack resonators with loaded quality factors of 2x10^4 for the visible wavelengths. The structures were fabricated in s…
Insulator-to-metal transition in sulfur-doped silicon
Mark T. Winkler, Daniel Recht, Meng-Ju Sher +3
We observe an insulator-to-metal (I-M) transition in crystalline silicon doped with sulfur to non- equilibrium concentrations using ion implantation followed by pulsed laser meltin…