Detail publikace

High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales

Peterka, P. Slobodeniuk, AO. Novotny, T. Suthar, P. Bartos, M. Trojanek, F. Maly, P. Kozak, M.

Originální název

High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

We report on experimental investigation of nonperturbative high harmonic generation (HHG) in monolayer MoS2 in the ultraviolet spectral region driven by mid-infrared light. We study how the HHG is influenced by pre-excitation of the monolayer using resonant and near-resonant pulses in a pump-probe-like scheme. The resonant light creates high density exciton population. Due to ultrafast dephasing caused by electron-electron scattering, the HHG is suppressed in the presence of pre-excited carriers. In the case of near-resonant excitation with photon energy below the exciton transition, the dynamics of the observed suppression of the HHG yield contains a fast component, which is a consequence of momentum scattering at carriers, which are excited by two-photon transition when the two pulses temporally overlap in the sample. This interpretation is supported by comparing the experimental data with theoretical calculations of the two-photon absorption spectrum of the MoS2 monolayer. This work demonstrates a possibility to control HHG in low-dimensional materials on ultrashort timescales by combining the driving strong-field pulse with a weak near-resonant light.

Klíčová slova

EXCITONS; FIELD

Autoři

Peterka, P.; Slobodeniuk, AO.; Novotny, T.; Suthar, P.; Bartos, M.; Trojanek, F.; Maly, P.; Kozak, M.

Vydáno

1. 8. 2023

Nakladatel

AIP Publishing

Místo

MELVILLE

ISSN

2378-0967

Periodikum

APL Photonics

Ročník

8

Číslo

8

Stát

Spojené státy americké

Strany počet

8

URL

https://pubs.aip.org/aip/app/article/8/8/086103/2905253/High-harmonic-generation-in-monolayer-MoS2

Plný text v Digitální knihovně

http://hdl.handle.net/11012/245024

BibTex

@article{BUT184610,
  author="Pavel {Peterka} and Artur {Slobodeniuk} and Tomáš {Novotný} and Pawan {Suthar} and Miroslav {Bartoš} and František {Trojánek} and Petr {Malý} and Martin {Kozák}",
  title="High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales",
  journal="APL Photonics",
  year="2023",
  volume="8",
  number="8",
  pages="8",
  doi="10.1063/5.0158995",
  issn="2378-0967",
  url="https://pubs.aip.org/aip/app/article/8/8/086103/2905253/High-harmonic-generation-in-monolayer-MoS2"
}