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Difference-Frequency Generation and Frequency Up-Conversion with Polaritonic Nonlinear Metasurfaces

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We report difference-frequency generation in nonlinear polaritonic metasurfaces based on coupling of electromagnetic nanocavity modes with intersubband nonlinearities in semiconductor heterostructures. Nonlinear susceptibility of 2.7 105 pm/V and the conversion efficiency of 0.13% were measured.

© 2018 The Author(s)

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