Experimental results show high efficiency in second harmonic generation using an inverse-designed metasurface, indicating potential in nonlinear optics.
We present the first experimental demonstration of an inverse-designed nonlinear all-dielectric metasurface. Our experimentally realized inverse-designed metasurface which includes quantum-engineered resonant nonlinearities is fabrication robust and demonstrates directional and record-high second harmonic generation efficiency.
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Stich et al. (2025) studied this question.
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