Observation of spin relaxation in self-assembled InAlAs quantum dots by using four-wave mixing technique

Observation of spin relaxation in self-assembled InAlAs quantum dots by using four-wave mixing technique

Exciton spin relaxation in self‐assembled InAlAs quantum dots were 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...

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Veröffentlicht in:Physica status solidi. C 2005-01, Vol.2 (2), p.854-857
Hauptverfasser: Adachi, Satoru, Watanuki, Takeo, Sasakura, Hirotaka, Muto, Shunichi
Format: Artikel
Sprache:eng
Schlagworte:
72.25.Rb
78.47.+p
78.67.Hc
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Zusammenfassung:Exciton spin relaxation in self‐assembled InAlAs quantum dots were 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 last up to a few ns and the time constant is ∼5 times larger than the exciton recombination time in average. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:1610-1634
1610-1642
DOI:10.1002/pssc.200460350