Nanocorrugation-enabled strong exciton–polariton coupling in MoS 2 dielectric cavities
Year: 2026
Type: article
Abstract: This study investigated exciton–photon coupling in monolayer MoS 2 integrated with a nanocorrugated SiN dielectric cavity, which supports tunable guided-mode resonances near a quasi-bound state in the continuum. The cavity exhibited a high quality-factor ( Q -factor) of up to 6300 and near-field enhancement of approximately 220 −2 . By engineering the SiN thickness and corrugation geometry, the cavity resonance was tuned across the MoS 2 A-exciton, enabling a transition from weak-coupling regime to a pronounced polaritonic regime, as indicated by the emergence of two strong transmission dips. Full-wave finite-element simulations combined with Lorentz oscillator dispersion modeling revealed clear anti-crossing behavior and narrow spectral features with a high Q -factor of approximately 340. Depending on the corrugation amplitude, a Rabi splitting of approximately 27 meV was achieved in conjunction with high- Q polariton modes, confirming a strong coupling regime. Furthermore, the curvature-induced strain introduced an additional tuning mechanism by modulating the exciton energy and detuning, thereby enabling controllable polariton dispersion while maintaining robust coupling strength. Results revealed that a nanocorrugated dielectric cavity with a facile configuration can serve as a scalable platform for strong light-matter interactions in two-dimensional materials and for designing high- Q exciton–polariton quantum devices.
Source: Nanotechnology
Authors: Vahid Faramarzi, Michael Taeyoung Hwang
Institution: Gachon University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,325
OpenAlex ID: W7160661402