Title :
The evolution of the electric field in an optically excited superlattice
Author :
Lisauskas, A. ; Sachs, R. ; Roskos, H. ; Juozapavicius, A. ; Valusis, G. ; Kohler, K.
Author_Institution :
Phys. Inst., Johann Wolfgang Goethe Univ., Frankfurt
Abstract :
We report on the time evolution of Wannier-Stark and flatband excitonic transitions and deduce the electric field dynamics in an intrinsic GaAs/AlGaAs (6.7 nm/1.7 nm) superlattice using time-resolved electroreflectance spectroscopy
Keywords :
III-V semiconductors; aluminium compounds; electroreflectance; excitons; gallium arsenide; semiconductor superlattices; time resolved spectra; 1.7 nm; 6.7 nm; GaAs-AlGaAs; Wannier-Stark transitions; electric field evolution; flatband excitonic transitions; optically excited superlattice; time-resolved electroreflectance spectroscopy; Delay; Laser excitation; Optical pumping; Optical superlattices; Power measurement; Probes; Pump lasers; Quantum cascade lasers; Semiconductor superlattices; Ultrafast optics;
Conference_Titel :
Quantum Electronics Conference, 2004. (IQEC). International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-778-4
