TITLE

Long spin relaxation in self-assembled InAlAs quantum dots observed by heterodyne four-wave mixing

AUTHOR(S)
Watanuki, T.; Adachi, S.; Sasakura, H.; Muto, S.
PUB. DATE
February 2005
SOURCE
Applied Physics Letters;2/7/2005, Vol. 86 Issue 6, p063114
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Exciton spin relaxation in self-assembled InAlAs quantum dots was investigated by three-pulse four-wave mixing under resonant conditions. The concept of the spin grating holds well for quantum dots and the measurements combined with optical heterodyne detection at 10 K demonstrates that the exciton spin relaxation lasts up to a few nanoseconds and the time constant is ∼5 times larger than the exciton recombination time on average.
ACCESSION #
16345421

 

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