Search results

Sort By:

Limit search:

Dynamics of the Intraband Light Absorption in Selectively Doped GaAs/AlGaAs Quantum Wells

100%

Vorobjev L., Panevin V., Fedosov N., Firsov D., Shalygin V., Seilmeier A., Schmidt S., Zibik E., Towe E., Kapaev V.

Acta Physica Polonica A

2005

vol. 107

issue 2

429-434

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.

Refine search results

1 Acta Physica Polonica A

1 2005

1 Fedosov N.

1 Firsov D.

1 Kapaev V.

1 Panevin V.

1 Schmidt S.

1 Seilmeier A.

1 Shalygin V.

1 Towe E.

1 Vorobjev L.

1 Zibik E.

Search results

Dynamics of the Intraband Light Absorption in Selectively Doped GaAs/AlGaAs Quantum Wells