Abstract

Energy-efficient, ultrafast, bistable systems operating at ambient temperature are the cores of modern information processing devices based on electronics and optics [1]. Graphene, single atomic layer of carbon atoms arranged in hexagonal lattice, is now considered to possess strong nonlinear optical properties, due to its massless Dirac-fermionic feature [2, 3]. Furthermore, recent theoretical studies demonstrate strong third order nonlinearities of graphene in terahertz (THz) frequency regimes [4]. In order to realize bistable transmission or reflection of electromagnetic waves, however, strong nonlinear optical materials must be accompanied by an optical feedback system such as Fabry-Perot resonators [1].

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