Chirp control of directional current in monolayer graphene by intense few-cycle laser

2019/05/29 by Erheng Wu, Wu, Erheng, Qiang Zhan +7
Physics and Astronomy · #Advanced Chemical Physics Studies #Advanced Fiber Laser Technologies #FOS: Physical sciences #Laser-Matter Interactions and Applications #Materials Science (cond-mat.mtrl-sci) #Optics (physics.optics)

paper · pdf · doi:10.48550/arxiv.1905.12166

openalex publication_date 2019/05/29 · openalex created_date 2019/06/07 · openalex updated_date 2026/07/28

Abstract

The residual current density in monolayer graphene driven by an intense few-cycle chirped laser pulse is investigated via numerical solution of the time-dependent Schrödinger equation. It is found that the residual current is sensitive to the initial chirp rate, and the defined asymmetry degree for current along the different polarization direction versus chirp rate follows a simple sinusoidal function. The underlying physical mechanism is the chirp-dependent Landau-Zener-Stückelberg interference. The chirp control of currents provides a novel convenient tool in the petaHertz switching of two-dimensional materials based optoelectronic devices on the sub-femtosecond timescale.

Citations

• High-harmonic generation from Bloch electrons in solids

Related

• Edge currents driven by terahertz radiation in graphene in quantum Hall regime
• Interaction of graphene monolayer with ultrashort laser pulse
• Graphene optical nonlinearity: From the third-order to the\n non-perturbative electrodynamic regime
• Ultrafast terahertz responses in monolayer graphene
• Nonlinear intensity dependence of photogalvanics and photoconductance induced by terahertz laser radiation in twisted bilayer graphene close to magic angle