7 papers · 1 filter
An efficient numerical method for simulating two-dimensional non-periodic metasurfaces
Fuhao Liu, Ya Yan Lu
Metasurfaces are extremely useful for controlling and manipulating electromagnetic waves. Full-wave numerical simulation is highly desired for their design and optimization, but it…
Asymptotically circularly polarized bound states in the continuum
Nan Zhang, Ya Yan Lu
We study a class of bound states in the continuum (BICs) in all-dielectric periodic structures, near which resonant states approach ideal circularly polarized states (CPSs). We ter…
Parametric dependence of unidirectional guided resonances in periodic structures
Lijun Yuan, Ya Yan Lu
Unidirectional guided resonances (UGRs) in periodic structures are special resonant modes that exhibit strict one-sided radiation, even though radiation in both sides is allowed, o…
Super Bound States in the Continuum: Analytic Framework, Parametric Dependence, and Fast Direct Computation
Nan Zhang, Ya Yan Lu
In periodic structures such as photonic crystal (PhC) slabs, a bound state in the continuum (BIC) is always surrounded by resonant states with their -factor following $Q\sim 1/|…
Existence of Friedrich-Wintgen bound states in the continuum: system of Schrödinger equations
Xiuchen Yu, Ya Yan Lu
A bound state in the continuum (BIC) is an eigenmode with the corresponding eigenvalue embedded in the continuous spectrum. There is currently a significant research interest on BI…
Relationship between total reflection and Fabry-Perot bound states in the continuum
Zitao Mai, Ya Yan Lu
Bound states in the continuum (BICs) have interesting properties and important applications in photonics. A particular class of BICs are found in Fabry-Perot (FP) cavities formed b…