Spin dynamics of cavity polaritons

M. D. Martín; L. Viña; J. K. Son; E. E. Mendez

doi:10.1016/S0038-1098(00)00426-9

Spin dynamics of cavity polaritons

M. D. Martín
, L. Viña
, J. K. Son
, E. E. Mendez

Physics and Astronomy

Universidad Autónoma de Madrid
Stony Brook University

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

17 Scopus citations

Abstract

We have studied polariton spin dynamics in a GaAs/AlGaAs microcavity by means of polarization- and time-resolved photoluminescence spectroscopy as a function of excitation density and normal mode splitting. The experiments reveal a novel behavior of the degree of polarization of the emission, namely the existence of a finite delay to reach its maximum value. We have also found that the stimulated emission of the lower polariton branch has a strong influence on spin dynamics: in an interval of approximately 150 ps the polarization changes from +100% to negative values as high as -60%. This strong modulation of the polarization and its high speed may open new possibilities for spin-based devices.

Original language	English
Pages (from-to)	267-271
Number of pages	5
Journal	Solid State Communications
Volume	117
Issue number	4
DOIs	https://doi.org/10.1016/S0038-1098(00)00426-9
State	Published - Jan 8 2001

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title = "Spin dynamics of cavity polaritons",

abstract = "We have studied polariton spin dynamics in a GaAs/AlGaAs microcavity by means of polarization- and time-resolved photoluminescence spectroscopy as a function of excitation density and normal mode splitting. The experiments reveal a novel behavior of the degree of polarization of the emission, namely the existence of a finite delay to reach its maximum value. We have also found that the stimulated emission of the lower polariton branch has a strong influence on spin dynamics: in an interval of approximately 150 ps the polarization changes from +100\% to negative values as high as -60\%. This strong modulation of the polarization and its high speed may open new possibilities for spin-based devices.",

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year = "2001",

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doi = "10.1016/S0038-1098(00)00426-9",

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TY - JOUR

T1 - Spin dynamics of cavity polaritons

AU - Martín, M. D.

AU - Viña, L.

AU - Son, J. K.

AU - Mendez, E. E.

PY - 2001/1/8

Y1 - 2001/1/8

N2 - We have studied polariton spin dynamics in a GaAs/AlGaAs microcavity by means of polarization- and time-resolved photoluminescence spectroscopy as a function of excitation density and normal mode splitting. The experiments reveal a novel behavior of the degree of polarization of the emission, namely the existence of a finite delay to reach its maximum value. We have also found that the stimulated emission of the lower polariton branch has a strong influence on spin dynamics: in an interval of approximately 150 ps the polarization changes from +100% to negative values as high as -60%. This strong modulation of the polarization and its high speed may open new possibilities for spin-based devices.

AB - We have studied polariton spin dynamics in a GaAs/AlGaAs microcavity by means of polarization- and time-resolved photoluminescence spectroscopy as a function of excitation density and normal mode splitting. The experiments reveal a novel behavior of the degree of polarization of the emission, namely the existence of a finite delay to reach its maximum value. We have also found that the stimulated emission of the lower polariton branch has a strong influence on spin dynamics: in an interval of approximately 150 ps the polarization changes from +100% to negative values as high as -60%. This strong modulation of the polarization and its high speed may open new possibilities for spin-based devices.

UR - https://www.scopus.com/pages/publications/0342502199

U2 - 10.1016/S0038-1098(00)00426-9

DO - 10.1016/S0038-1098(00)00426-9

M3 - Article

AN - SCOPUS:0342502199

SN - 0038-1098

VL - 117

SP - 267

EP - 271

JO - Solid State Communications

JF - Solid State Communications

IS - 4

ER -

Spin dynamics of cavity polaritons

Abstract

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