- Tytuł:
- Dynamics of the Electric Field in a GaAs/AlGaAs Superlattice after Femtosecond Optical Excitation: Application of Time-Resolved Spectroscopic Techniques
- Autorzy:
-
Lisauskas, A.
Blöser, C.
Sachs, R.
Roskos, H.
Juozapavičius, A.
Valušis, G.
Köhler, K. - Powiązania:
- https://bibliotekanauki.pl/articles/1178281.pdf
- Data publikacji:
- 2005-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
03.65.Sq
78.47.+p - Opis:
- We apply time-resolved photocurrent and differential electroreflectance spectroscopy to study the evolution of the internal field in a GaAs/AlGaAs superlattice after pulsed optical excitation at low temperature. The electric field dynamics is investigated by tracing the spectral position of the Wannier-Stark transitions as a function of delay time. We determine the electron sweep-out time, extract detailed information about the picosecond-time-scale drift of the charge carriers by comparing the measured data with the results of semi-classical self-consistent model calculations, and evaluate the two experimental techniques with respect to their ability to provide information about the carrier and field dynamics.
- Źródło:
-
Acta Physica Polonica A; 2005, 107, 2; 250-255
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł