Title :
Ultrafast electron-hole scattering monitored by hole cooling in optically excited Germanium quantum wells
Author :
Kolata, K. ; Köster, N.S. ; Chatterjee, S. ; Chrastina, D. ; Isella, G. ; Sipe, J.E. ; Imhoff, S. ; Thränhardt, A.
Author_Institution :
Fac. of Phys. & Mater. Sci. Center, Philipps-Univ. Marburg, Marburg, Germany
Abstract :
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.
Keywords :
elemental semiconductors; germanium; high-speed optical techniques; phonon spectra; semiconductor quantum wells; time resolved spectra; Γ-valleγ; Ge; L-valley; cooling dynamics; hole cooling; optically excited germanium quantum wells; phonon spectra; picosecond time scale; scattering dynamics; time-resolved pump-probe experiments; ultrafast electron-hole scattering; Absorption; Cooling; Germanium; Optical pumping; Optical scattering; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
