Strong nonlinear optical response of graphene in the terahertz regime

A. R. Wright, X. G. Xu, J. C. Cao, C. Zhang
2009 Applied Physics Letters  
We demonstrate that within the model of massless Dirac fermions, graphene has a strong nonlinear optical response in the terahertz regime. It is found that the nonlinear contribution significantly alters both the single frequency and frequency tripled optical response at experimentally relevant field strengths. The optical activity of single layer graphene is significantly enhanced by nonlinear effects, and the frequency tripled response opens the gateway to photonic and optoelectronic device
more » ... electronic device applications.
doi:10.1063/1.3205115 fatcat:cbrmsauzlbgbre6lckr3eykvzq