Publication detail

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.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

EXCITONS; FIELD

Authors

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

Released

1. 8. 2023

Publisher

AIP Publishing

Location

MELVILLE

ISBN

2378-0967

Periodical

APL Photonics

Year of study

8

Number

8

State

United States of America

Pages count

8

URL

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

Full text in the Digital Library

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"
}