Interference-induced phenomena in high-order harmonic generation from bulk solids

Viktor Szaszkó-Bogár, P. Földi, István Magashegyi, K. Varjú

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number1572
JournalApplied Sciences (Switzerland)
Volume9
Issue number8
DOIs
Publication statusPublished - Apr 1 2019

Fingerprint

Harmonic generation
Valence bands
Gages
harmonic generations
Energy gap
Photons
interference
Radiation
harmonics
harmonic radiation
cut-off
retarding
dipoles
valence
photons
approximation
energy

Keywords

  • High intensity lasers
  • High-order harmonic generation
  • Light-matter interaction
  • Optical phenomena in solids

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

Cite this

Interference-induced phenomena in high-order harmonic generation from bulk solids. / Szaszkó-Bogár, Viktor; Földi, P.; Magashegyi, István; Varjú, K.

In: Applied Sciences (Switzerland), Vol. 9, No. 8, 1572, 01.04.2019.

Research output: Contribution to journalArticle

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