In the frame of the EU-funded GRAPHENICS project, researchers from B-PHOT and from the University of Toronto recently theoretically demonstrated that graphene’s optical nonlinearities strongly depend on the chemical potential established in the material. JinLuo Cheng, Nathalie Vermeulen, and John E. Sipe obtained these results using perturbative calculations that also incorporate the interband and intraband motion of the electrons in graphene’s energy bands. Taking into account that the chemical potential of graphene is tuneable, their findings thus show that one should be able to control the nonlinear optical properties of graphene. These research results, which were published in the New Journal of Physics, now feature as Research Highlight in the August 2014 edition of Nature Photonics.
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