Direct observation of picosecond spin relaxation of excitons in GaAs/AlGaAs quantum wells using spin-dependent optical nonlinearity

Atsushi Tackeuchi; Shunichi Muto; Tsuguo Inata; Toshio Fujii

doi:10.1063/1.102970

Direct observation of picosecond spin relaxation of excitons in GaAs/AlGaAs quantum wells using spin-dependent optical nonlinearity

Atsushi Tackeuchi^*, Shunichi Muto, Tsuguo Inata, Toshio Fujii

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

122 Citations (Scopus)

Abstract

We have directly observed spin relaxation of excitons in the picosecond region using time-resolved polarization absorption measurements. With the help of spin-dependent optical nonlinearity of excitonic absorption, we obtained a fast decay of spin-up carriers and a fast accumulation of spin-down carriers with a spin relaxation time of 32 ps for a GaAs/Al_0.51Ga _0.49As multiple quantum well at room temperature with a time resolution of 1 ps.

Original language	English
Pages (from-to)	2213-2215
Number of pages	3
Journal	Applied Physics Letters
Volume	56
Issue number	22
DOIs	https://doi.org/10.1063/1.102970
Publication status	Published - 1990
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.102970

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title = "Direct observation of picosecond spin relaxation of excitons in GaAs/AlGaAs quantum wells using spin-dependent optical nonlinearity",

abstract = "We have directly observed spin relaxation of excitons in the picosecond region using time-resolved polarization absorption measurements. With the help of spin-dependent optical nonlinearity of excitonic absorption, we obtained a fast decay of spin-up carriers and a fast accumulation of spin-down carriers with a spin relaxation time of 32 ps for a GaAs/Al0.51Ga 0.49As multiple quantum well at room temperature with a time resolution of 1 ps.",

author = "Atsushi Tackeuchi and Shunichi Muto and Tsuguo Inata and Toshio Fujii",

year = "1990",

doi = "10.1063/1.102970",

language = "English",

volume = "56",

pages = "2213--2215",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "22",

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TY - JOUR

T1 - Direct observation of picosecond spin relaxation of excitons in GaAs/AlGaAs quantum wells using spin-dependent optical nonlinearity

AU - Tackeuchi, Atsushi

AU - Muto, Shunichi

AU - Inata, Tsuguo

AU - Fujii, Toshio

PY - 1990

Y1 - 1990

N2 - We have directly observed spin relaxation of excitons in the picosecond region using time-resolved polarization absorption measurements. With the help of spin-dependent optical nonlinearity of excitonic absorption, we obtained a fast decay of spin-up carriers and a fast accumulation of spin-down carriers with a spin relaxation time of 32 ps for a GaAs/Al0.51Ga 0.49As multiple quantum well at room temperature with a time resolution of 1 ps.

AB - We have directly observed spin relaxation of excitons in the picosecond region using time-resolved polarization absorption measurements. With the help of spin-dependent optical nonlinearity of excitonic absorption, we obtained a fast decay of spin-up carriers and a fast accumulation of spin-down carriers with a spin relaxation time of 32 ps for a GaAs/Al0.51Ga 0.49As multiple quantum well at room temperature with a time resolution of 1 ps.

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U2 - 10.1063/1.102970

DO - 10.1063/1.102970

M3 - Article

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Direct observation of picosecond spin relaxation of excitons in GaAs/AlGaAs quantum wells using spin-dependent optical nonlinearity

Abstract

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