High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F23%3APU148971" target="_blank" >RIV/00216305:26620/23:PU148971 - isvavai.cz</a>
Result on the web
<a href="https://pubs.aip.org/aip/app/article/8/8/086103/2905253/High-harmonic-generation-in-monolayer-MoS2" target="_blank" >https://pubs.aip.org/aip/app/article/8/8/086103/2905253/High-harmonic-generation-in-monolayer-MoS2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0158995" target="_blank" >10.1063/5.0158995</a>
Alternative languages
Result language
angličtina
Original language name
High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales
Original language description
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.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
APL Photonics
ISSN
2378-0967
e-ISSN
—
Volume of the periodical
8
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
„“-„“
UT code for WoS article
001048682100006
EID of the result in the Scopus database
2-s2.0-85166917019