Description
High-quality factor (high-Q) resonant metasurfaces provide a powerful means of light-matter interaction [1], yet translating these individual resonances into scalable, multifunctional systems remains a significant challenge. Specifically, the characteristic spectral selectivity of high-Q modes, combined with the spatial extent typically required to support nonlocal resonances, often limits the functional density of integrated meta-optics. In this talk, we discuss an architectural framework to navigate these constraints, centred on a foundation of spatial multiplexing complemented by functional enhancements enabled by geometry and engineered disorder [2].
We address the footprint-functionality bottleneck through the development of "Disordered Mosaic metasurfaces." By introducing intentional structural disorder into the implementation of nonlocal resonant modes, we demonstrate that the required area for a specific photonic function can be significantly reduced. This "space-reclaiming" approach allows for the dense interleaving of functionally distinct resonant meta-pixels. We demonstrate this via two prominent applications: (i) an 8 mm achromatic metalens maintaining high-Q quasi-bound states in the continuum (quasi-BIC) across the 1200-1400 nm range by encoding 11 spectrally distinct lens profiles into a single footprint, and (ii) a Full-Stokes metasurface enabling single-shot characterization of spatially inhomogeneous fields, including optical skyrmions. The proposed framework establishes a robust route toward on-demand, highly integrated, compact optical systems.
References
[1] Kuznetsov, Arseniy I., et al. "Optically resonant dielectric nanostructures." Science 354.6314 (2016): aag2472.
[2] Li, Chi, et al. "Disordered mosaic metasurfaces with scalable functional density." Nature Communications (2026).
| I am the presenting author | Yes |
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