Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films
The generation of high-order harmonics in solid crystals has received considerable attention recently. Using a driver laser with 0.8 µm wavelength and 28 fs ultrashort pulses, we present experimental results, accompanied with theoretical considerations, suggesting that the actual sources of the harm...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Optics |
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| Online Access: | https://www.mdpi.com/2673-3269/4/1/17 |
| _version_ | 1827748233677373440 |
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| author | Jozsef Seres Enikoe Seres Eva Céspedes Leyre Martinez-de-Olcoz Miguel Zabala Thorsten Schumm |
| author_facet | Jozsef Seres Enikoe Seres Eva Céspedes Leyre Martinez-de-Olcoz Miguel Zabala Thorsten Schumm |
| author_sort | Jozsef Seres |
| collection | DOAJ |
| description | The generation of high-order harmonics in solid crystals has received considerable attention recently. Using a driver laser with 0.8 µm wavelength and 28 fs ultrashort pulses, we present experimental results, accompanied with theoretical considerations, suggesting that the actual sources of the harmonics are nanometer-sized localized and transient electronic states on the surface of the materials when the laser intensity is in the non-perturbative regime. Adaptation of the bond model of the harmonic generation into the non-perturbative regime and including the quantum features of the process provide a localized excitation approach that correctly describes the measured polarization dependence of the harmonic signal, reflecting the microscopic surface structure and symmetries of the examined materials. |
| first_indexed | 2024-03-11T06:04:19Z |
| format | Article |
| id | doaj.art-924a031a6e8e413e8cc009d3bc3fda11 |
| institution | Directory Open Access Journal |
| issn | 2673-3269 |
| language | English |
| last_indexed | 2024-03-11T06:04:19Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Optics |
| spelling | doaj.art-924a031a6e8e413e8cc009d3bc3fda112023-11-17T13:07:48ZengMDPI AGOptics2673-32692023-03-014124625710.3390/opt4010017Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-FilmsJozsef Seres0Enikoe Seres1Eva Céspedes2Leyre Martinez-de-Olcoz3Miguel Zabala4Thorsten Schumm5Quantum Metrology Group, Institute for Atomic and Subatomic Physics—E141, TU Wien, Stadionallee 2, 1020 Vienna, AustriaQuantum Metrology Group, Institute for Atomic and Subatomic Physics—E141, TU Wien, Stadionallee 2, 1020 Vienna, AustriaMicro and Nanofabrication Clean Room, Institute of Microelectronics of Barcelona, IMB-CNM (CSIC), Campus UAB, Cerdanyola, 08193 Barcelona, SpainMicro and Nanofabrication Clean Room, Institute of Microelectronics of Barcelona, IMB-CNM (CSIC), Campus UAB, Cerdanyola, 08193 Barcelona, SpainMicro and Nanofabrication Clean Room, Institute of Microelectronics of Barcelona, IMB-CNM (CSIC), Campus UAB, Cerdanyola, 08193 Barcelona, SpainQuantum Metrology Group, Institute for Atomic and Subatomic Physics—E141, TU Wien, Stadionallee 2, 1020 Vienna, AustriaThe generation of high-order harmonics in solid crystals has received considerable attention recently. Using a driver laser with 0.8 µm wavelength and 28 fs ultrashort pulses, we present experimental results, accompanied with theoretical considerations, suggesting that the actual sources of the harmonics are nanometer-sized localized and transient electronic states on the surface of the materials when the laser intensity is in the non-perturbative regime. Adaptation of the bond model of the harmonic generation into the non-perturbative regime and including the quantum features of the process provide a localized excitation approach that correctly describes the measured polarization dependence of the harmonic signal, reflecting the microscopic surface structure and symmetries of the examined materials.https://www.mdpi.com/2673-3269/4/1/17high harmonic generationlight–matter interactionnano-filmsnano-objects |
| spellingShingle | Jozsef Seres Enikoe Seres Eva Céspedes Leyre Martinez-de-Olcoz Miguel Zabala Thorsten Schumm Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films Optics high harmonic generation light–matter interaction nano-films nano-objects |
| title | Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films |
| title_full | Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films |
| title_fullStr | Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films |
| title_full_unstemmed | Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films |
| title_short | Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films |
| title_sort | nonperturbative generation of harmonics by nanometer scale localized electronic states on the surface of bulk materials and nano films |
| topic | high harmonic generation light–matter interaction nano-films nano-objects |
| url | https://www.mdpi.com/2673-3269/4/1/17 |
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