Generation mechanism for coherent LO phonons in surface-space-charge fields of III-V-compounds

Pfeifer, Torsten; Dekorsy, Thomas; Kütt, Waldemar; Kurz, Heinrich

Generation mechanism for coherent LO phonons in surface-space-charge fields of III-V-compounds

Dateien

Generation_mechanism_for_coherent_LO_phonons_in_surface_space_charge_fields_of_III_V_compounds.pdfGröße: 1.34 MBDownloads: 554

Datum

1992

Autor:innen

Pfeifer, Torsten

Dekorsy, Thomas

Kütt, Waldemar

Kurz, Heinrich

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Applied Physics A. 1992, 55, pp. 482-488. Available under: doi: 10.1007/BF00348337

Zusammenfassung

We report on details of coherent LO phonon generation in surface-space-charge regions of III-V-compounds by optical injection of free carriers with laser pulses of 50 fs duration at 2 eV. Both the dynamics of the transient surface field, as well as the coherent lattice vibration, are measured via electro-optic sampling techniques under different experimental conditions. The driving force for the coherent phonon vibration is the sudden depolarization of the crystal lattice due to ultrafast screening of the intrinsic electrical surface field by photoexcited free carriers.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

PFEIFER, Torsten, Thomas DEKORSY, Waldemar KÜTT, Heinrich KURZ, 1992. Generation mechanism for coherent LO phonons in surface-space-charge fields of III-V-compounds. In: Applied Physics A. 1992, 55, pp. 482-488. Available under: doi: 10.1007/BF00348337

BibTex

@article{Pfeifer1992Gener-8860,
  year={1992},
  doi={10.1007/BF00348337},
  title={Generation mechanism for coherent LO phonons in surface-space-charge fields of III-V-compounds},
  volume={55},
  journal={Applied Physics A},
  pages={482--488},
  author={Pfeifer, Torsten and Dekorsy, Thomas and Kütt, Waldemar and Kurz, Heinrich}
}

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