Ultrafast tuning of radiative optical losses in quasi-bound states in the continuum

Optically resonant metasurfaces provide a convenient way to enhance light-matter interactions in a confined spectral region, boosting nonlinear phenomena, sensitivity in biosensing, or spontaneous emission. Specifically, structures based on symmetry-protected quasi-bound states in the continuum (qBICs) have emerged as a popular framework to design resonant metasurfaces, as their structure does not only determine the resonance's wavelength, but also the quality-factor through the asymmetry of each unit cell [1].

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DDC Class

600: Technology