L. Fang, A. Madouri, A. Cavanna, I. Sagnes, D. Chouteau, X. Lafosse, G. Beaudoin, J. Oudar
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All-optical switching in a vertical microcavity-integrated monolayer graphene device
We demonstrate that the nonlinear optical response of graphene is resonantly enhanced by incorporating monolayer graphene into a Fabry-Pérot microcavity. The modulation depth of the microcavity-integrated monolayer graphene device is increased to 12% which is much higher than the value of about 2% in other works, while retaining an ultrafast recovery time of ~0.7 ps. This suggests possible application in ultrafast all-optical signal processing.