Ultrafast electron-hole scattering monitored by hole cooling in optically excited Germanium quantum wells

Ultrafast electron-hole scattering monitored by hole cooling in optically excited Germanium quantum wells

The scattering and cooling dynamics in Ge quantum wells are investigated on a picosecond time scale. Time-resolved pump-probe experiments reveal an efficient scattering process between electrons in the L-valley and holes in the Γ-valley.

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Bibliographische Detailangaben
Hauptverfasser: Kolata, K., Koster, N. S., Chatterjee, S., Chrastina, D., Isella, G., Sipe, J. E., Imhoff, S., Thranhardt, A.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Absorption
Cooling
Germanium
Optical pumping
Optical scattering
Ultrafast optics
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Beschreibung
Zusammenfassung:The scattering and cooling dynamics in Ge quantum wells are investigated on a picosecond time scale. Time-resolved pump-probe experiments reveal an efficient scattering process between electrons in the L-valley and holes in the Γ-valley.
ISSN:2160-8989
2160-9004
DOI:10.1364/QELS.2012.QM2G.6