Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids
We consider a quantum mechanical model for the high-order harmonic generation in bulk solids. The bandgap is assumed to be considerably larger than the exciting photon energy. Using dipole approximation, the dynamical equations for different initial Bloch states are decoupled in the velocity gauge....
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/8/1572 |
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| author | Viktor Szaszkó-Bogár Péter Földi István Magashegyi Katalin Varjú |
| author_facet | Viktor Szaszkó-Bogár Péter Földi István Magashegyi Katalin Varjú |
| author_sort | Viktor Szaszkó-Bogár |
| collection | DOAJ |
| description | We consider a quantum mechanical model for the high-order harmonic generation in bulk solids. The bandgap is assumed to be considerably larger than the exciting photon energy. Using dipole approximation, the dynamical equations for different initial Bloch states are decoupled in the velocity gauge. Although there is no quantum mechanical interference between the time evolution of different initial states, the complete harmonic radiation results from the interference of fields emitted by all the initial (valence band) states. In particular, the suppression of the even-order harmonics can also be viewed as a consequence of this interference. The number of the observable harmonics (essentially the cutoff) is also determined by interference phenomena. |
| first_indexed | 2024-12-11T20:00:58Z |
| format | Article |
| id | doaj.art-40059374b2fc45088384878c7f50d0d3 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-11T20:00:58Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-40059374b2fc45088384878c7f50d0d32022-12-22T00:52:31ZengMDPI AGApplied Sciences2076-34172019-04-0198157210.3390/app9081572app9081572Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk SolidsViktor Szaszkó-Bogár0Péter Földi1István Magashegyi2Katalin Varjú3ELI-ALPS, ELI-HU Non-Profit Ltd., Dugonics tér 13, H-6720 Szeged, HungaryELI-ALPS, ELI-HU Non-Profit Ltd., Dugonics tér 13, H-6720 Szeged, HungaryDepartment of Photonics and Laser Research, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, HungaryELI-ALPS, ELI-HU Non-Profit Ltd., Dugonics tér 13, H-6720 Szeged, HungaryWe consider a quantum mechanical model for the high-order harmonic generation in bulk solids. The bandgap is assumed to be considerably larger than the exciting photon energy. Using dipole approximation, the dynamical equations for different initial Bloch states are decoupled in the velocity gauge. Although there is no quantum mechanical interference between the time evolution of different initial states, the complete harmonic radiation results from the interference of fields emitted by all the initial (valence band) states. In particular, the suppression of the even-order harmonics can also be viewed as a consequence of this interference. The number of the observable harmonics (essentially the cutoff) is also determined by interference phenomena.https://www.mdpi.com/2076-3417/9/8/1572light-matter interactionhigh intensity lasershigh-order harmonic generationoptical phenomena in solids |
| spellingShingle | Viktor Szaszkó-Bogár Péter Földi István Magashegyi Katalin Varjú Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids Applied Sciences light-matter interaction high intensity lasers high-order harmonic generation optical phenomena in solids |
| title | Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids |
| title_full | Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids |
| title_fullStr | Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids |
| title_full_unstemmed | Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids |
| title_short | Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids |
| title_sort | interference induced phenomena in high order harmonic generation from bulk solids |
| topic | light-matter interaction high intensity lasers high-order harmonic generation optical phenomena in solids |
| url | https://www.mdpi.com/2076-3417/9/8/1572 |
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