73 citations · 75 across the 2 of their papers we have counts for
6 papers · 1 filter
Point-Defect-Localized Bound States in the Continuum in Photonic Crystals and Structured Fibers
Sachin Vaidya, Wladimir A. Benalcazar, Alexander Cerjan +1
We show that point defects in two-dimensional photonic crystals can support bound states in the continuum (BICs). The mechanism of confinement is a symmetry mismatch between the de…
Is single-mode lasing possible in an infinite periodic system?
Mohammed Benzaouia, Alexander Cerjan, Steven G. Johnson
In this Letter, we present a rigorous method to study the stability of periodic lasing systems. In a linear model, the presence of a continuum of modes (with arbitrarily close lasi…
Observation of a higher-order topological bound state in the continuum
Alexander Cerjan, Marius Jürgensen, Wladimir A. Benalcazar +2
Higher-order topological insulators are a recently discovered class of materials that can possess zero-dimensional localized states regardless of the dimension of the lattice. Here…
Observation of a charge-2 photonic Weyl point in the infrared
Sachin Vaidya, Jiho Noh, Alexander Cerjan +1
Weyl points are robust point degeneracies in the band structure of a periodic material, which act as monopoles of Berry curvature. They have been at the forefront of research in th…
Bound states in the continuum through environmental design
Alexander Cerjan, Chia Wei Hsu, Mikael C. Rechtsman
We propose a new paradigm for realizing bound states in the continuum (BICs) by engineering the environment of a system to control the number of available radiation channels. Using…
Experimental realization of a Weyl exceptional ring
Alexander Cerjan, Sheng Huang, Kevin P. Chen +2
Weyl points are isolated degeneracies in reciprocal space that are monopoles of the Berry curvature. This topological charge makes them inherently robust to Hermitian perturbations…