High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales
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-l...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2023-08-01
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| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/5.0158995 |
| _version_ | 1797689607134904320 |
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| author | Pavel Peterka Artur O. Slobodeniuk Tomáš Novotný Pawan Suthar Miroslav Bartoš František Trojánek Petr Malý Martin Kozák |
| author_facet | Pavel Peterka Artur O. Slobodeniuk Tomáš Novotný Pawan Suthar Miroslav Bartoš František Trojánek Petr Malý Martin Kozák |
| author_sort | Pavel Peterka |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-12T01:48:03Z |
| format | Article |
| id | doaj.art-1dfb494bdccd475c83190178a3b357be |
| institution | Directory Open Access Journal |
| issn | 2378-0967 |
| language | English |
| last_indexed | 2024-03-12T01:48:03Z |
| publishDate | 2023-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Photonics |
| spelling | doaj.art-1dfb494bdccd475c83190178a3b357be2023-09-08T16:17:32ZengAIP Publishing LLCAPL Photonics2378-09672023-08-0188086103086103-810.1063/5.0158995High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scalesPavel Peterka0Artur O. Slobodeniuk1Tomáš Novotný2Pawan Suthar3Miroslav Bartoš4František Trojánek5Petr Malý6Martin Kozák7Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech RepublicDepartment of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech RepublicDepartment of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech RepublicDepartment of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech RepublicCentral European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech RepublicDepartment of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech RepublicDepartment of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech RepublicDepartment of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech RepublicWe 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.http://dx.doi.org/10.1063/5.0158995 |
| spellingShingle | Pavel Peterka Artur O. Slobodeniuk Tomáš Novotný Pawan Suthar Miroslav Bartoš František Trojánek Petr Malý Martin Kozák High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales APL Photonics |
| title | High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales |
| title_full | High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales |
| title_fullStr | High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales |
| title_full_unstemmed | High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales |
| title_short | High harmonic generation in monolayer MoS2 controlled by resonant and near-resonant pulses on ultrashort time scales |
| title_sort | high harmonic generation in monolayer mos2 controlled by resonant and near resonant pulses on ultrashort time scales |
| url | http://dx.doi.org/10.1063/5.0158995 |
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