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) | 964-966 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 68 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1996 Dec 1 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Adachi, S., Takeyama, S., Takagi, Y., Tackeuchi, A., & Muto, S. (1996). Ultrafast optical sampling pump-probe measurement of exciton spin relaxation in GaAs/AlGaAs quantum wells. Applied Physics Letters, 68(7), 964-966. https://doi.org/10.1063/1.116113