Rabi oscillations under ultrafast excitation of graphene

TL;DR

This paper investigates the nonlinear coherent dynamics, specifically Rabi oscillations, in intrinsic graphene under ultrafast excitation, analyzing how these oscillations depend on pump intensity and relaxation effects.

Contribution

It provides a detailed theoretical analysis of Rabi oscillations in graphene under ultrafast excitation, including effects of relaxation and dephasing on the response.

Findings

Rabi oscillations appear with increasing pump intensity.

The response depends on spectral and temporal parameters.

Energy relaxation and dephasing significantly influence the dynamics.

Abstract

We study coherent nonlinear dynamics of carriers under ultrafast interband excitation of an intrinsic graphene. The Rabi oscillations of response appear with increasing of pumping intensity. The photoexcited distribution is calculated versus time and energy taking into account the effects of energy relaxation and dephasing. Spectral and temporal dependencies of the response on a probe radiation (transmission and reflection coefficients) are considered for different pumping intensities and the Rabi oscillations versus time and intensity are analyzed.