Field-dependent absorption in superlattices: Comparison of theory and experiment

A. Thränhardt; H. J. Kolbe; J. Hader; T. Meier; G. Weiser; S. W. Koch

doi:10.1063/1.122522

Field-dependent absorption in superlattices: Comparison of theory and experiment

A. Thränhardt, H. J. Kolbe, J. Hader, T. Meier, G. Weiser, S. W. Koch

Research output: Contribution to journal › Review article › peer-review

11 Scopus citations

Abstract

Absorption and differential electroabsorption spectra of a GaInAs/InP superlattice in the regime of Wannier-Stark localization are compared with spectra derived from the Semiconductors Bloch Equations. The absorption is strongly underestimated for higher energies by the effective mass approximation but good agreement is achieved by using an energy dependent in-plane effective mass. No fitting parameters are used except for a phenomenological broadening. The lineshape of the field-modulated spectra is dominated by the strong field dependence of Wannier-Stark transitions and depends on the amplitude of the modulating field which should be kept small for best results.

Original language	English (US)
Pages (from-to)	2612-2614
Number of pages	3
Journal	Applied Physics Letters
Volume	73
Issue number	18
DOIs	https://doi.org/10.1063/1.122522
State	Published - 1998
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.122522

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title = "Field-dependent absorption in superlattices: Comparison of theory and experiment",

abstract = "Absorption and differential electroabsorption spectra of a GaInAs/InP superlattice in the regime of Wannier-Stark localization are compared with spectra derived from the Semiconductors Bloch Equations. The absorption is strongly underestimated for higher energies by the effective mass approximation but good agreement is achieved by using an energy dependent in-plane effective mass. No fitting parameters are used except for a phenomenological broadening. The lineshape of the field-modulated spectra is dominated by the strong field dependence of Wannier-Stark transitions and depends on the amplitude of the modulating field which should be kept small for best results.",

author = "A. Thr{\"a}nhardt and Kolbe, {H. J.} and J. Hader and T. Meier and G. Weiser and Koch, {S. W.}",

year = "1998",

doi = "10.1063/1.122522",

language = "English (US)",

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pages = "2612--2614",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Field-dependent absorption in superlattices

T2 - Comparison of theory and experiment

AU - Thränhardt, A.

AU - Kolbe, H. J.

AU - Hader, J.

AU - Meier, T.

AU - Weiser, G.

AU - Koch, S. W.

PY - 1998

Y1 - 1998

N2 - Absorption and differential electroabsorption spectra of a GaInAs/InP superlattice in the regime of Wannier-Stark localization are compared with spectra derived from the Semiconductors Bloch Equations. The absorption is strongly underestimated for higher energies by the effective mass approximation but good agreement is achieved by using an energy dependent in-plane effective mass. No fitting parameters are used except for a phenomenological broadening. The lineshape of the field-modulated spectra is dominated by the strong field dependence of Wannier-Stark transitions and depends on the amplitude of the modulating field which should be kept small for best results.

AB - Absorption and differential electroabsorption spectra of a GaInAs/InP superlattice in the regime of Wannier-Stark localization are compared with spectra derived from the Semiconductors Bloch Equations. The absorption is strongly underestimated for higher energies by the effective mass approximation but good agreement is achieved by using an energy dependent in-plane effective mass. No fitting parameters are used except for a phenomenological broadening. The lineshape of the field-modulated spectra is dominated by the strong field dependence of Wannier-Stark transitions and depends on the amplitude of the modulating field which should be kept small for best results.

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U2 - 10.1063/1.122522

DO - 10.1063/1.122522

M3 - Review article

AN - SCOPUS:0000857406

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VL - 73

SP - 2612

EP - 2614

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

ER -

Field-dependent absorption in superlattices: Comparison of theory and experiment

Abstract

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