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Ferroelectric nanosheets boost nonlinearity


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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Fig. 1: Principles of thin-film nonlinear optics for the case of SHG.


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Correspondence to Rupert F. Oulton.

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Oulton, R.F., Flórez, J. & Clark, A.S. Ferroelectric nanosheets boost nonlinearity. Nat. Photon. 16, 611–612 (2022).

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