Terahertz modulated optical sideband generation in graphene

Abstract

Exploration of optical non-linear response of graphene predominantly relies on ultra-short time domain measurements. Here we propose an alternate technique that uses frequency modulated continuous wavefront optical fields, thereby probing graphene's steady state non-linear response. We predict frequency sideband generation in the reflected field that originates from coherent electron dynamics of the photo-excited carriers. The corresponding threshold in input intensity for optimal sideband generation provides a direct measure of the third order optical non-linearity in graphene. Our formulation yields analytic forms for the generated sideband intensity, is applicable to generic two-band systems and suggests a range of applications that include switching of frequency sidebands using non-linear phase shifts and generation of frequency combs.

To appear in Phys. Rev. B

References in corpus (12)

• Universal Dynamic Conductivity and Quantized Visible Opacity of Suspended Graphene
• Measurement of the Optical Conductivity of Graphene
• Nonlinear electromagnetic response of graphene: Frequency multiplication and the self-consistent-field effects
• Third harmonic generation in graphene and few-layer graphite films
• Gate tunable third-order nonlinear optical response of massless Dirac fermions in graphene
• Plasmon-assisted high-harmonic generation in graphene
• High harmonic generation in undoped graphene: Interplay of inter- and intraband dynamics
• Diabatic Mechanisms of Higher-Order Harmonic Generation in Solid-State Materials under High-Intensity Electric Fields
• Higher-Order Harmonic Generation caused by Elliptically Polarized Electric Fields in Solid-State Materials
• Nonlinear and anisotropic polarization rotation in two dimensional Dirac materials
• Nonlinear, anisotropic and giant photoconductivity in intrinsic and doped graphene
• Pumping electrons in graphene to the $\mathbf{M}$-point in the Brillouin zone: The emergence of anisotropic plasmons