Abstract
Spin dynamics in GaAs/AlGaAs multiple quantum wells at room temperature are studied in subpicosecond to nanosecond time region by using the optical sampling nondegenerate pump-probe technique. Polarization-dependent absorption signals resonant to the light-hole (lh) exciton revealed the subpicosecond spin relaxation time which was several tens of times shorter than that of the heavy-hole (hh) exciton. Resonant pumping to lh and probing at hh exhibited no spin dependence within the time resolution, showing the spin memory being washed out completely during the energy relaxation from lh to hh.
| Original language | English |
|---|---|
| Pages (from-to) | 964 |
| Number of pages | 1 |
| Journal | Applied Physics Letters |
| DOIs | |
| Publication status | Published - 1995 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Ultrafast optical sampling pump-probe measurement of exciton spin relaxation in GaAs/AlGaAs quantum wells. / Adachi, Satoru; Takeyama, Shojiro; Takagi, Yoshihiro; Tackeuchi, Atsushi; Muto, Shunichi.
In: Applied Physics Letters, 1995, p. 964.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ultrafast optical sampling pump-probe measurement of exciton spin relaxation in GaAs/AlGaAs quantum wells
AU - Adachi, Satoru
AU - Takeyama, Shojiro
AU - Takagi, Yoshihiro
AU - Tackeuchi, Atsushi
AU - Muto, Shunichi
PY - 1995
Y1 - 1995
N2 - Spin dynamics in GaAs/AlGaAs multiple quantum wells at room temperature are studied in subpicosecond to nanosecond time region by using the optical sampling nondegenerate pump-probe technique. Polarization-dependent absorption signals resonant to the light-hole (lh) exciton revealed the subpicosecond spin relaxation time which was several tens of times shorter than that of the heavy-hole (hh) exciton. Resonant pumping to lh and probing at hh exhibited no spin dependence within the time resolution, showing the spin memory being washed out completely during the energy relaxation from lh to hh.
AB - Spin dynamics in GaAs/AlGaAs multiple quantum wells at room temperature are studied in subpicosecond to nanosecond time region by using the optical sampling nondegenerate pump-probe technique. Polarization-dependent absorption signals resonant to the light-hole (lh) exciton revealed the subpicosecond spin relaxation time which was several tens of times shorter than that of the heavy-hole (hh) exciton. Resonant pumping to lh and probing at hh exhibited no spin dependence within the time resolution, showing the spin memory being washed out completely during the energy relaxation from lh to hh.
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U2 - 10.1063/1.116113
DO - 10.1063/1.116113
M3 - Article
SP - 964
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
ER -