Strong nonlinear optical response in graphene in terahertz regime

Authors

Anthony Wright, University of WollongongFollow
Xuguang Xu, Chinese Academy of Science
J. C. Cao, Chinese Academy of Science
Chao Zhang, University of WollongongFollow

RIS ID

29320

Publication Details

Wright, A., Xu, X., Cao, J. & Zhang, C. (2009). Strong nonlinear optical response in graphene in terahertz regime. Applied Physics Letters, 95 (7), 072101-1-072101-3.

Abstract

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 applications.