High-harmonic generation in graphene enhanced by elliptically polarized light excitation

Science
Naotaka YoshikawaKoichiro Tanaka

Abstract

The electronic properties of graphene can give rise to a range of nonlinear optical responses. One of the most desirable nonlinear optical processes is high-harmonic generation (HHG) originating from coherent electron motion induced by an intense light field. Here, we report on the observation of up to ninth-order harmonics in graphene excited by mid-infrared laser pulses at room temperature. The HHG in graphene is enhanced by an elliptically polarized laser excitation, and the resultant harmonic radiation has a particular polarization. The observed ellipticity dependence is reproduced by a fully quantum mechanical treatment of HHG in solids. The zero-gap nature causes the unique properties of HHG in graphene, and our findings open up the possibility of investigating strong-field and ultrafast dynamics and nonlinear behavior of massless Dirac fermions.

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Citations

Mar 27, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·H K AvetissianG F Mkrtchian
Oct 27, 2017·Physical Chemistry Chemical Physics : PCCP·Jiu ChenWei Quan Tian
Mar 11, 2018·Nature Communications·Matthias BaudischJens Biegert
Sep 8, 2019·The Journal of Chemical Physics·Toshinori Suzuki
Mar 1, 2018·Science Advances·Nicolas Tancogne-Dejean, Angel Rubio
Apr 30, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Sen PeiWei Zhang
Aug 20, 2019·Nature Communications·Naotaka YoshikawaKoichiro Tanaka
Sep 15, 2018·Nature Communications·Tran Trung LuuHans Jakob Wörner
Jan 18, 2019·Optics Express·I M KislyakovJ Wang
Dec 1, 2018·Physical Review Letters·Christian HeidePeter Hommelhoff
May 2, 2020·Physical Review Letters·Shohei ImaiSumio Ishihara
Aug 19, 2018·Optics Express·Kotaro ImasakaSatoshi Ashihara
Aug 4, 2018·Nature Communications·G P ZhangThomas F George
May 31, 2019·Physical Review Letters·Liang LiPeixiang Lu
Mar 17, 2019·Optics Express·Óscar Zurrón-CifuentesLuis Plaja
Aug 20, 2020·Nature Communications·Y KawakamiS Iwai
Jul 17, 2020·Optics Express·Óscar Zurrón-CifuentesLuis Plaja
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