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Article

Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids

1
ELI-ALPS, ELI-HU Non-Profit Ltd., Dugonics tér 13, H-6720 Szeged, Hungary
2
Department of Optics and Quantum Electronics, University of Szeged, Dóm tér 9, H-6720 Szeged, Hungary
3
Department of Photonics and Laser Research, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Hungary
4
Department of Theoretical Physics, University of Szeged, Tisza Lajos körút 84, H-6720 Szeged, Hungary
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(8), 1572; https://doi.org/10.3390/app9081572
Received: 17 December 2018 / Revised: 8 April 2019 / Accepted: 10 April 2019 / Published: 16 April 2019
(This article belongs to the Special Issue Attosecond Science and Technology: Principles and Applications)
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. View Full-Text
Keywords: light-matter interaction; high intensity lasers; high-order harmonic generation; optical phenomena in solids light-matter interaction; high intensity lasers; high-order harmonic generation; optical phenomena in solids
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MDPI and ACS Style

Szaszkó-Bogár, V.; Földi, P.; Magashegyi, I.; Varjú, K. Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids. Appl. Sci. 2019, 9, 1572. https://doi.org/10.3390/app9081572

AMA Style

Szaszkó-Bogár V, Földi P, Magashegyi I, Varjú K. Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids. Applied Sciences. 2019; 9(8):1572. https://doi.org/10.3390/app9081572

Chicago/Turabian Style

Szaszkó-Bogár, Viktor, Péter Földi, István Magashegyi, and Katalin Varjú. 2019. "Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids" Applied Sciences 9, no. 8: 1572. https://doi.org/10.3390/app9081572

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