- Tytuł:
- Dynamics of the Intraband Light Absorption in Selectively Doped GaAs/AlGaAs Quantum Wells
- Autorzy:
-
Vorobjev, L.
Panevin, V.
Fedosov, N.
Firsov, D.
Shalygin, V.
Seilmeier, A.
Schmidt, S.
Zibik, E.
Towe, E.
Kapaev, V. - Powiązania:
- https://bibliotekanauki.pl/articles/1178288.pdf
- Data publikacji:
- 2005-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
42.55.Px
42.60.-v - Opis:
- Spectral and temperature dependences of equilibrium and non-equi-intersubband light absorption in the mid-infrared spectral range were studied in selectively doped asymmetrical tunnel-coupled GaAs/AlGaAs quantum wells. The temporal evolution of the absorption studied by means of a picosecond pump-probe technique was found to have a biexponential character. The fast decay times are determined by intersubband electron relaxation due to electron scattering by optical phonons and impurities. The presence of long decay times in transient mid-infrared absorption is probably connected with electron transitions from the states in barrier (X and L valleys as well as deep centers) to the states of the quantum well. Experimentally determined intersubband scattering times are compared with the calculated ones.
- Źródło:
-
Acta Physica Polonica A; 2005, 107, 2; 429-434
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł