Ultrafast optical sampling pump-probe measurement of exciton spin relaxation in GaAs/AlGaAs quantum wells

Satoru Adachi*, Shojiro Takeyama, Yoshihiro Takagi, Atsushi Tackeuchi, Shunichi Muto

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)964-966
ページ数3
ジャーナルApplied Physics Letters
68
7
DOI
出版ステータスPublished - 1996
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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