57 citations · 299 across the 18 of their papers we have counts for
18 papers
Structural perturbation theory for bound states in the continuum via bifurcation of zeros and extrema of the dispersion relation
Lijun Yuan, Ya Yan Lu
In a lossless periodic structure, a bound state in the continuum (BIC) corresponds to a real zero and a local maximum of the imaginary part of a complex dispersion relation $k = k(…
On the Robustness of Propagating Bound States in the Continuum
Lijun Yuan, Ya Yan Lu
Bound states in the continuum (BICs) are localized eigenmodes with their frequencies in the radiation continuum of scattering states. The existence of a BIC implies the loss of uni…
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…
Parametric dependence of bound states in the continuum: a general theory
Amgad Abdrabou, Lijun Yuan, Wangtao Lu +1
Photonic structures with high- resonances are essential for many practical applications, and they can be relatively easily realized by modifying ideal structures with bound stat…
Real transmission and reflection zeros of periodic structures with a bound state in the continuum
Lijun Yuan, Mingyang Zhang, Ya Yan Lu
For lossless periodic structures with a proper symmetry, the transmission and reflection spectra often have peaks and dips that are truly and , respectively. The full…
Approximating transmission and reflection spectra near isolated nondegenerate resonances
Hongyao Wu, Lijun Yuan, Ya Yan Lu
A linear scattering problem for which incoming and outgoing waves are restricted to a finite number of radiation channels can be precisely described by a frequency-dependent scatte…
Resonant field enhancement in lossy periodic structures supporting complex bound states in the continuum
Ling Tan, Lijun Yuan, Ya Yan Lu
Resonant modes in a lossy periodic structure sandwiched between two lossless homogeneous media form bands that depend on the Bloch wavevector continuously and have a complex freque…
Parametric dependence of bound states in the continuum in periodic structures: vectorial cases
Lijun Yuan, Ya Yan Lu
A periodic structure sandwiched between two homogeneous media can support bound states in the continuum (BICs) that are valuable for many applications. It is known that generic BIC…
On the robustness of bound states in the continuum in waveguides with lateral leakage channels
Lijun Yuan, Ya Yan Lu
Bound states in the continuum (BICs) are trapped or guided modes with frequencies in radiation continua. They are associated with high-quality-factor resonances that give rise to s…
Parametric Dependence of Bound States in the Continuum on Periodic Structures
Lijun Yuan, Ya Yan Lu
Bound states in the continuum (BICs) have some unusual properties and important applications in photonics. A periodic structure sandwiched between two homogeneous media is the most…
Conditional robustness of propagating bound states in the continuum on biperiodic structures
Lijun Yuan, Ya Yan Lu
For a periodic structure sandwiched between two homogeneous media, a bound state in the continuum (BIC) is a guided Bloch mode with a frequency in the radiation continuum. Optical…
Resonant field enhancement near bound states in the continuum on periodic structures
Zhen Hu, Lijun Yuan, Ya Yan Lu
On periodic structures sandwiched between two homogeneous media, a bound state in the continuum (BIC) is a guided Bloch mode with a frequency within the radiation continuum. BICs a…
Perturbation theories for symmetry-protected bound states in the continuum on two-dimensional periodic structures
Lijun Yuan, Ya Yan Lu
On dielectric periodic structures with a reflection symmetry in a periodic direction, there can be antisymmetric standing waves (ASWs) that are symmetry-protected bound states in t…
Bound states with complex frequencies near the continuum on lossy periodic structures
Zhen Hu, Lijun Yuan, Ya Yan Lu
On a lossless periodic dielectric structure sandwiched between two homogeneous media, bound states in the continuum (BICs) with real frequencies and real Bloch wavevectors may exis…
Unidirectional Reflectionless Transmission for Two-Dimensional -symmetric Periodic Structures
Lijun Yuan, Ya Yan Lu
Unidirectional reflectionless propagation (or transmission) is an interesting wave phenomenon observed in many -symmetric optical structures. Theoretical studies on u…
Excitation of bound states in the continuum via second harmonic generations
Lijun Yuan, Ya Yan Lu
A bound state in the continuum (BIC) on a periodic structure sandwiched between two homogeneous media is a guided mode with a frequency and a wavenumber such that propagating plane…
Bound states in the continuum on periodic structures surrounded by strong resonances
Lijun Yuan, Ya Yan Lu
Bound states in the continuum (BICs) are trapped or guided modes with their frequencies in the frequency intervals of the radiation modes. On periodic structures, a BIC is surround…
Bound States in the Continuum on Periodic Structures: Perturbation Theory and Robustness
Lijun Yuan, Ya Yan Lu
On periodic structures, a bound state in the continuum (BIC) is a standing or propagating Bloch wave with a frequency in the radiation continuum. Some BICs (e.g., antisymmetric sta…