C D Bezant et al 1999 Semicond. Sci. Technol. 14 L25 doi:10.1088/0268-1242/14/8/101
Intersubband relaxation lifetimes in p-GaAs/AlGaAs quantum wells below the LO-phonon energy measured in a free electron laser experiment
C D Bezant
, J M Chamberlain, H P M Pellemans
, B N Murdin§, W Batty|| and M Henini
LETTER TO THE EDITOR
Lifetimes for the LH1 to HH1 transition in GaAs/AlGaAs quantum wells are measured by pump and probe spectroscopy using a free electron laser. The energy of the LH1 to HH1 transition is below that of the longitudinal optical phonon. A value of 55 ps is found for a 67 Å wide well at 8 K. Comparisons with recent measurements for electron systems are presented.
- PACS
- Subjects
- Dates
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Issue 8 (August 1999)
Received 23 April 1999, accepted for publication 30 June 1999
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Intersubband relaxation lifetimes in p-GaAs/AlGaAs quantum wells below the LO-phonon energy measured in a free electron laser experiment
C D Bezant et al 1999 Semicond. Sci. Technol. 14 L25
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