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4 October 2024 Efficient nonlinearities in metasurfaces enabled by bound states in the continuum
Hayk Harutyunyan
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Proceedings Volume 13117, Enhanced Spectroscopies and Nanoimaging 2024; 131170H (2024) https://doi.org/10.1117/12.3028724
Event: Nanoscience + Engineering, 2024, San Diego, California, United States
Abstract
We present a novel approach to designing high-quality bound states in the continuum (BIC) in dielectric metasurfaces using magnetic dipole resonances coupled to a mirror, enabling strong light–matter interaction without the need for asymmetric geometry or polarization dependence. This simplifies fabrication and enhances practical applications, demonstrated by a record-breaking third harmonic generation efficiency. Additionally, we showcase superior modulation characteristics with a pulsewidth-limited switching time of 100 fs and a remarkably low energy consumption, facilitated by the narrow photonic resonance of our metasurface. Our findings offer significant potential for optical sensing, quantum photonics, and nonlinear devices.
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Hayk Harutyunyan "Efficient nonlinearities in metasurfaces enabled by bound states in the continuum", Proc. SPIE 13117, Enhanced Spectroscopies and Nanoimaging 2024, 131170H (4 October 2024); https://doi.org/10.1117/12.3028724
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KEYWORDS
Quantum bounds
Magnetism
Modulation
Nonlinear optics
Optical sensing
Quantum devices
Quantum enhancement
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