Multilayered ferroelectric NbOI2 crystals with sub-100-nm thickness exhibit efficient second harmonic generation, paving the way for on-chip nonlinear optical components.
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Oulton, R.F., Flórez, J. & Clark, A.S. Ferroelectric nanosheets boost nonlinearity. Nat. Photon. 16, 611–612 (2022). https://doi.org/10.1038/s41566-022-01065-0
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DOI: https://doi.org/10.1038/s41566-022-01065-0
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