Abstract
The transient ((Formula presented)) to ((Formula presented)) intersubband absorption of a pure electron plasma in (Formula presented)-type (Formula presented)(Formula presented)As/(Formula presented)(Formula presented)As quantum wells is studied in femtosecond pump-probe experiments. The ultrafast dynamics of nonlinear absorption shows strong changes when tuning the midinfrared pulses over the intersubband absorption line. The nonlinear optical response is determined by both intersubband relaxation with a time constant of 1.3 ps and the intraband dynamics of ((Formula presented)) electrons, which are monitored in an independent experiment.
Original language | English (US) |
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Pages (from-to) | R17343-R17346 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 54 |
Issue number | 24 |
DOIs | |
State | Published - 1996 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics