Ultra-sensitive Light Confinement Driven by Multiple Bound States in the Continuum
arXiv:2003.04047 · doi:10.1103/PhysRevA.102.033528
Abstract
We propose a unique framework to study the topological properties of an optical bound state in the continuum(BIC). We employ the interactions between proximity resonances undergoing avoided resonance crossing in a specialty optical microcavity. We utilize a continuous system parameter tuning to induce destructive interference between the resonances with cancelling leakage losses. Similar to the physical insight of Friedrich-Wingten type-BIC, we demonstrate the evolution of an ultra-high quality mode. We report the formation of a special-BIC line in the system parameter space connecting locations of multiple quasi-BICs. Aiming to develop a novel scheme to enhance the performance of optical sensing in microcavity, we study the sensitivity of transmission coefficients and quality factor to sense even ultra-small perturbations in the system configuration.
arXiv comment5 pages, 3 figures
References in corpus (12)
- Asymmetric metasurfaces with high- resonances governed by bound states in the continuum
- Topologically Enabled Ultra-high-Q Guided Resonances Robust to Out-of-plane Scattering
- High-Q supercavity modes in subwavelength dielectric resonators
- Giant nonlinear response at the nanoscale driven by bound states in the continuum
- Bound states in the continuum and Fano resonances in the strong mode coupling regime
- Formation of long-lived, scarlike modes near avoided resonance crossings in optical microcavities
- Unconventional modes in lasers with spatially varying gain and loss
- Bound states in continuum in an electron waveguide
- Bound states in the continuum through environmental design
- Parity-Time Symmetric Coupled Microresonators with a Dispersive Gain/Loss
- Coherent-perfect-absorber and laser for bound states in a continuum
- Quality enhancement with simultaneous suppression in excess noise of longer-lived states in non-uniformly pumped optical microcavities