- Tytuł:
- Ultrafast Phenomena in II-VI Semiconductors
- Autorzy:
-
Kalt, H.
Wachter, S.
Lüerssen, D.
Hoffmann, J. - Powiązania:
- https://bibliotekanauki.pl/articles/1968987.pdf
- Data publikacji:
- 1998-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
78.47.+p
42.50.Md
71.35.-y - Opis:
- We review studies on the coherent and incoherent exciton dynamics in ZnSe-based quantum wells. First, the exciton-exciton scattering parameter is determined from femtosecond four-wave mixing as a function of background exciton density generated by a prepulse. A linear increase in the excitonic homogeneous linewidth is found as a function of the background exciton density with significant different scattering parameters for the cases of interaction with coherent or incoherent excitons. Second, the thermalization dynamics of spectrally narrow hot-exciton distributions is investigated by time-resolved phonon sideband spectroscopy. Thermalization assisted by acoustic phonons occurs on a 100 ps timescale, which is in good agreement with model calculations in time dependent perturbation theory.
- Źródło:
-
Acta Physica Polonica A; 1998, 94, 2; 139-146
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł