Learning qBIC Resonances across Metasurface Families in Dielectric Fourier Space
Bound states in the continuum (BIC) metasurfaces are typically described by geometry-specific parameters, hindering cross-geometry comparison, while ultranarrow qBIC features are easily diluted in full-spectrum learning. Here, 2015 samples from seven dielectric metasurface families are mapped to a shared reciprocal-lattice grid, where two frozen low-order Fourier channels capture resonance shifts with mean within-branch $R^2$ values of 0.871-0.999. Field-level analysis of two representative branches further confirms that these shifts are consistent with the Maxwell-Fourier perturbation picture. A five-channel K-space backbone models the broadband spectrum, while a local complex K-space ex...
| Authors | Shuangteng Lei, Li Yu, Tianxin Li et al. |
|---|---|
| Primary category | physics.optics |
| Published | 8 October 2026 |
| Last updated at source | 8 October 2026 |
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