Exciton Saturation in Room Temperature GaAs/AlGaAs Multiple Quantum Wells

TM Holden; GT Kennedy; AR Cameron; P Riblet; Alan Miller

doi:10.1063/1.119694

Exciton Saturation in Room Temperature GaAs/AlGaAs Multiple Quantum Wells

TM Holden, GT Kennedy, AR Cameron, P Riblet, Alan Miller

School of Physics and Astronomy

Research output: Other contribution

Abstract

We report time resolved studies of optically induced circular dichroism in room temperature GaAs/AlGaAs multiple quantum wells to resolve spin-dependent and spin-independent contributions to exciton saturation. Phase-space filling and Coulomb contributions were separated by spin dependence while the effects of broadening and screening were distinguished using different pulse bandwidths. Bound and free carrier contributions were compared bq observing the temporal dependence of the circular dichroism on femtosecond timescales, The spin independent contribution to exciton saturation was found to be independent of whether the carriers were bound or free. (C) 1997 American Institute of Physics.

Original language	English
Volume	71
DOIs	https://doi.org/10.1063/1.119694
Publication status	Published - 18 Aug 1997

Keywords

CIRCULAR-DICHROISM
MODE-LOCKING
NONLINEARITIES
DYNAMICS
DIODE

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10.1063/1.119694

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title = "Exciton Saturation in Room Temperature GaAs/AlGaAs Multiple Quantum Wells",

abstract = "We report time resolved studies of optically induced circular dichroism in room temperature GaAs/AlGaAs multiple quantum wells to resolve spin-dependent and spin-independent contributions to exciton saturation. Phase-space filling and Coulomb contributions were separated by spin dependence while the effects of broadening and screening were distinguished using different pulse bandwidths. Bound and free carrier contributions were compared bq observing the temporal dependence of the circular dichroism on femtosecond timescales, The spin independent contribution to exciton saturation was found to be independent of whether the carriers were bound or free. (C) 1997 American Institute of Physics.",

keywords = "CIRCULAR-DICHROISM, MODE-LOCKING, NONLINEARITIES, DYNAMICS, DIODE",

author = "TM Holden and GT Kennedy and AR Cameron and P Riblet and Alan Miller",

note = "Appl Phys Lett",

year = "1997",

month = aug,

day = "18",

doi = "10.1063/1.119694",

language = "English",

volume = "71",

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TY - GEN

T1 - Exciton Saturation in Room Temperature GaAs/AlGaAs Multiple Quantum Wells

AU - Holden, TM

AU - Kennedy, GT

AU - Cameron, AR

AU - Riblet, P

AU - Miller, Alan

N1 - Appl Phys Lett

PY - 1997/8/18

Y1 - 1997/8/18

N2 - We report time resolved studies of optically induced circular dichroism in room temperature GaAs/AlGaAs multiple quantum wells to resolve spin-dependent and spin-independent contributions to exciton saturation. Phase-space filling and Coulomb contributions were separated by spin dependence while the effects of broadening and screening were distinguished using different pulse bandwidths. Bound and free carrier contributions were compared bq observing the temporal dependence of the circular dichroism on femtosecond timescales, The spin independent contribution to exciton saturation was found to be independent of whether the carriers were bound or free. (C) 1997 American Institute of Physics.

AB - We report time resolved studies of optically induced circular dichroism in room temperature GaAs/AlGaAs multiple quantum wells to resolve spin-dependent and spin-independent contributions to exciton saturation. Phase-space filling and Coulomb contributions were separated by spin dependence while the effects of broadening and screening were distinguished using different pulse bandwidths. Bound and free carrier contributions were compared bq observing the temporal dependence of the circular dichroism on femtosecond timescales, The spin independent contribution to exciton saturation was found to be independent of whether the carriers were bound or free. (C) 1997 American Institute of Physics.

KW - CIRCULAR-DICHROISM

KW - MODE-LOCKING

KW - NONLINEARITIES

KW - DYNAMICS

KW - DIODE

UR - http://www.scopus.com/inward/record.url?scp=0000262115&partnerID=8YFLogxK

U2 - 10.1063/1.119694

DO - 10.1063/1.119694

M3 - Other contribution

VL - 71

ER -

Exciton Saturation in Room Temperature GaAs/AlGaAs Multiple Quantum Wells

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Keywords

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