Exciton radiative lifetime of quantum rods in reflectivity

D. Sreenivasan; J.E.M. Haverkort; S.A. Maksimenko; G.Y. Slepyan; J. He; R. Nötzel

doi:10.1016/j.physe.2007.09.062

Exciton radiative lifetime of quantum rods in reflectivity

D. Sreenivasan, J.E.M. Haverkort, S.A. Maksimenko, G.Y. Slepyan, J. He, R. Nötzel

Photonics and Semiconductor Nanophysics

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Abstract

Time-resolved differential reflectivity (TRDR) experiments were performed on columnar InAs/GaAs quantum rods (QRs). Aresonant-like enhancement of the exciton radiative lifetime near the centre of the inhomogeneously broadened QR-size distribution isobserved. At low pump excitation density, the TRDR decay time shows the expected excitonic behaviour. At increased pump excitation,a quasi-resonant radiative lifetime develops, which seems to be dependent on the excited QR density being resonant with the probe laserspectrum. The resonance is interpreted as due to electromagnetic coupling between randomly distributed excited QRs that are resonantwith the probe laser.

Original language	English
Pages (from-to)	1985-1987
Number of pages	3
Journal	Physica E: Low-Dimensional Systems & Nanostructures
Volume	40
Issue number	6
DOIs	https://doi.org/10.1016/j.physe.2007.09.062
Publication status	Published - 2008

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title = "Exciton radiative lifetime of quantum rods in reflectivity",

abstract = "Time-resolved differential reflectivity (TRDR) experiments were performed on columnar InAs/GaAs quantum rods (QRs). Aresonant-like enhancement of the exciton radiative lifetime near the centre of the inhomogeneously broadened QR-size distribution isobserved. At low pump excitation density, the TRDR decay time shows the expected excitonic behaviour. At increased pump excitation,a quasi-resonant radiative lifetime develops, which seems to be dependent on the excited QR density being resonant with the probe laserspectrum. The resonance is interpreted as due to electromagnetic coupling between randomly distributed excited QRs that are resonantwith the probe laser.",

author = "D. Sreenivasan and J.E.M. Haverkort and S.A. Maksimenko and G.Y. Slepyan and J. He and R. N{\"o}tzel",

year = "2008",

doi = "10.1016/j.physe.2007.09.062",

language = "English",

volume = "40",

pages = "1985--1987",

journal = "Physica E: Low-Dimensional Systems & Nanostructures",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Exciton radiative lifetime of quantum rods in reflectivity

AU - Sreenivasan, D.

AU - Haverkort, J.E.M.

AU - Maksimenko, S.A.

AU - Slepyan, G.Y.

AU - He, J.

AU - Nötzel, R.

PY - 2008

Y1 - 2008

N2 - Time-resolved differential reflectivity (TRDR) experiments were performed on columnar InAs/GaAs quantum rods (QRs). Aresonant-like enhancement of the exciton radiative lifetime near the centre of the inhomogeneously broadened QR-size distribution isobserved. At low pump excitation density, the TRDR decay time shows the expected excitonic behaviour. At increased pump excitation,a quasi-resonant radiative lifetime develops, which seems to be dependent on the excited QR density being resonant with the probe laserspectrum. The resonance is interpreted as due to electromagnetic coupling between randomly distributed excited QRs that are resonantwith the probe laser.

AB - Time-resolved differential reflectivity (TRDR) experiments were performed on columnar InAs/GaAs quantum rods (QRs). Aresonant-like enhancement of the exciton radiative lifetime near the centre of the inhomogeneously broadened QR-size distribution isobserved. At low pump excitation density, the TRDR decay time shows the expected excitonic behaviour. At increased pump excitation,a quasi-resonant radiative lifetime develops, which seems to be dependent on the excited QR density being resonant with the probe laserspectrum. The resonance is interpreted as due to electromagnetic coupling between randomly distributed excited QRs that are resonantwith the probe laser.

U2 - 10.1016/j.physe.2007.09.062

DO - 10.1016/j.physe.2007.09.062

M3 - Article

SN - 1386-9477

VL - 40

SP - 1985

EP - 1987

JO - Physica E: Low-Dimensional Systems & Nanostructures

JF - Physica E: Low-Dimensional Systems & Nanostructures

IS - 6

ER -

Exciton radiative lifetime of quantum rods in reflectivity

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