Dynamical centrosymmetry breaking — A novel mechanism for second harmonic generation in graphene

David N. Carvalho; Andrea Marini; Fabio Biancalana

doi:10.1016/j.aop.2016.11.016

Dynamical centrosymmetry breaking — A novel mechanism for second harmonic generation in graphene

David N. Carvalho, Andrea Marini, Fabio Biancalana

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

129 Downloads (Pure)

Abstract

We discover an unusual phenomenon that occurs when a graphene monolayer is illuminated by a short and intense pulse at normal incidence. Due to the pulse-induced oscillations of the Dirac cones, a dynamical breaking of the layer’s centrosymmetry takes place, leading to the generation of second harmonic waves. We prove that this result can only be found by using the full Dirac equation and show that the widely used semiconductor Bloch equations fail to reproduce this and some other important physics of graphene. Our results open new windows in the understanding of nonlinear light-matter interactions in a wide variety of new 2D materials with a gapped or ungapped Dirac-like dispersion.

Original language	English
Pages (from-to)	24-32
Number of pages	9
Journal	Annals of Physics
Volume	378
Early online date	14 Dec 2016
DOIs	https://doi.org/10.1016/j.aop.2016.11.016
Publication status	Published - Mar 2017

Access to Document

10.1016/j.aop.2016.11.016

Download pdfAccepted author manuscript, 56.6 KBLicence: CC BY-NC-ND

Cite this

@article{a159ce2a2cf9438580e0557737036675,

title = "Dynamical centrosymmetry breaking — A novel mechanism for second harmonic generation in graphene",

abstract = "We discover an unusual phenomenon that occurs when a graphene monolayer is illuminated by a short and intense pulse at normal incidence. Due to the pulse-induced oscillations of the Dirac cones, a dynamical breaking of the layer{\textquoteright}s centrosymmetry takes place, leading to the generation of second harmonic waves. We prove that this result can only be found by using the full Dirac equation and show that the widely used semiconductor Bloch equations fail to reproduce this and some other important physics of graphene. Our results open new windows in the understanding of nonlinear light-matter interactions in a wide variety of new 2D materials with a gapped or ungapped Dirac-like dispersion.",

author = "Carvalho, {David N.} and Andrea Marini and Fabio Biancalana",

year = "2017",

month = mar,

doi = "10.1016/j.aop.2016.11.016",

language = "English",

volume = "378",

pages = "24--32",

journal = "Annals of Physics",

issn = "0003-4916",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Dynamical centrosymmetry breaking — A novel mechanism for second harmonic generation in graphene

AU - Carvalho, David N.

AU - Marini, Andrea

AU - Biancalana, Fabio

PY - 2017/3

Y1 - 2017/3

N2 - We discover an unusual phenomenon that occurs when a graphene monolayer is illuminated by a short and intense pulse at normal incidence. Due to the pulse-induced oscillations of the Dirac cones, a dynamical breaking of the layer’s centrosymmetry takes place, leading to the generation of second harmonic waves. We prove that this result can only be found by using the full Dirac equation and show that the widely used semiconductor Bloch equations fail to reproduce this and some other important physics of graphene. Our results open new windows in the understanding of nonlinear light-matter interactions in a wide variety of new 2D materials with a gapped or ungapped Dirac-like dispersion.

AB - We discover an unusual phenomenon that occurs when a graphene monolayer is illuminated by a short and intense pulse at normal incidence. Due to the pulse-induced oscillations of the Dirac cones, a dynamical breaking of the layer’s centrosymmetry takes place, leading to the generation of second harmonic waves. We prove that this result can only be found by using the full Dirac equation and show that the widely used semiconductor Bloch equations fail to reproduce this and some other important physics of graphene. Our results open new windows in the understanding of nonlinear light-matter interactions in a wide variety of new 2D materials with a gapped or ungapped Dirac-like dispersion.

U2 - 10.1016/j.aop.2016.11.016

DO - 10.1016/j.aop.2016.11.016

M3 - Article

SN - 0003-4916

VL - 378

SP - 24

EP - 32

JO - Annals of Physics

JF - Annals of Physics

ER -

Dynamical centrosymmetry breaking — A novel mechanism for second harmonic generation in graphene

Abstract

Access to Document

Fingerprint

Cite this