Excitonic transitions in highly efficient (GaIn)As/Ga(AsSb) type-II quantum-well structures

S. Gies; C. Kruska; C. Berger; P. Hens; C. Fuchs; A. Ruiz Perez; N. W. Rosemann; J. Veletas; S. Chatterjee; W. Stolz; S. W. Koch; J. Hader; J. V. Moloney; W. Heimbrodt

doi:10.1063/1.4935212

Excitonic transitions in highly efficient (GaIn)As/Ga(AsSb) type-II quantum-well structures

S. Gies
, C. Kruska
, C. Berger
, P. Hens
, C. Fuchs
, A. Ruiz Perez
, N. W. Rosemann
, J. Veletas
, S. Chatterjee
, W. Stolz
, S. W. Koch
, J. Hader
, J. V. Moloney
, W. Heimbrodt

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

17 Scopus citations

Abstract

The excitonic transitions of the type-II (GaIn)As/Ga(AsSb) gain medium of a "W"-laser structure are characterized experimentally by modulation spectroscopy and analyzed using microscopic quantum theory. On the basis of the very good agreement between the measured and calculated photoreflectivity, the type-I or type-II character of the observable excitonic transitions is identified. Whereas the energetically lowest three transitions exhibit type-II character, the subsequent energetically higher transitions possess type-I character with much stronger dipole moments. Despite the type-II character, the quantum-well structure exhibits a bright luminescence.

Original language	English (US)
Article number	182104
Journal	Applied Physics Letters
Volume	107
Issue number	18
DOIs	https://doi.org/10.1063/1.4935212
State	Published - Nov 2 2015

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4935212

Cite this

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title = "Excitonic transitions in highly efficient (GaIn)As/Ga(AsSb) type-II quantum-well structures",

abstract = "The excitonic transitions of the type-II (GaIn)As/Ga(AsSb) gain medium of a {"}W{"}-laser structure are characterized experimentally by modulation spectroscopy and analyzed using microscopic quantum theory. On the basis of the very good agreement between the measured and calculated photoreflectivity, the type-I or type-II character of the observable excitonic transitions is identified. Whereas the energetically lowest three transitions exhibit type-II character, the subsequent energetically higher transitions possess type-I character with much stronger dipole moments. Despite the type-II character, the quantum-well structure exhibits a bright luminescence.",

author = "S. Gies and C. Kruska and C. Berger and P. Hens and C. Fuchs and \{Ruiz Perez\}, A. and Rosemann, \{N. W.\} and J. Veletas and S. Chatterjee and W. Stolz and Koch, \{S. W.\} and J. Hader and Moloney, \{J. V.\} and W. Heimbrodt",

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doi = "10.1063/1.4935212",

language = "English (US)",

volume = "107",

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T1 - Excitonic transitions in highly efficient (GaIn)As/Ga(AsSb) type-II quantum-well structures

AU - Gies, S.

AU - Kruska, C.

AU - Berger, C.

AU - Hens, P.

AU - Fuchs, C.

AU - Ruiz Perez, A.

AU - Rosemann, N. W.

AU - Veletas, J.

AU - Chatterjee, S.

AU - Stolz, W.

AU - Koch, S. W.

AU - Hader, J.

AU - Moloney, J. V.

AU - Heimbrodt, W.

PY - 2015/11/2

Y1 - 2015/11/2

N2 - The excitonic transitions of the type-II (GaIn)As/Ga(AsSb) gain medium of a "W"-laser structure are characterized experimentally by modulation spectroscopy and analyzed using microscopic quantum theory. On the basis of the very good agreement between the measured and calculated photoreflectivity, the type-I or type-II character of the observable excitonic transitions is identified. Whereas the energetically lowest three transitions exhibit type-II character, the subsequent energetically higher transitions possess type-I character with much stronger dipole moments. Despite the type-II character, the quantum-well structure exhibits a bright luminescence.

AB - The excitonic transitions of the type-II (GaIn)As/Ga(AsSb) gain medium of a "W"-laser structure are characterized experimentally by modulation spectroscopy and analyzed using microscopic quantum theory. On the basis of the very good agreement between the measured and calculated photoreflectivity, the type-I or type-II character of the observable excitonic transitions is identified. Whereas the energetically lowest three transitions exhibit type-II character, the subsequent energetically higher transitions possess type-I character with much stronger dipole moments. Despite the type-II character, the quantum-well structure exhibits a bright luminescence.

UR - https://www.scopus.com/pages/publications/84946782576

UR - https://www.scopus.com/pages/publications/84946782576#tab=citedBy

U2 - 10.1063/1.4935212

DO - 10.1063/1.4935212

M3 - Article

AN - SCOPUS:84946782576

SN - 0003-6951

VL - 107

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 182104

ER -

Excitonic transitions in highly efficient (GaIn)As/Ga(AsSb) type-II quantum-well structures

Abstract

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