Coherent nonlinear pulse propagation on a free-exciton resonance in a 
semiconductor

Nielsen, N. C.; Linden, S.; Kuhl, J.; Förstner, J.; Knorr, A.; Koch, S. W.; Giessen, H.

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Coherent nonlinear pulse propagation on a free-exciton resonance in a semiconductor

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Nielsen, N. C.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Linden, S.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Kuhl, J.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Koch, S. W.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Giessen, H.
Former Research Groups, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Nielsen, N. C., Linden, S., Kuhl, J., Förstner, J., Knorr, A., Koch, S. W., et al. (2001). Coherent nonlinear pulse propagation on a free-exciton resonance in a semiconductor. Physical Review B, 64(24): 245202.

Cite as: https://hdl.handle.net/21.11116/0000-000E-E51F-E

Abstract

The coherent exciton-light coupling in pulse propagation
experiments on the A-exciton resonance in bulk CdSe is
investigated over a broad intensity range. At low light
intensities, polariton propagation beats due to interference
between excited states on both polariton branches are observed,
In an intermediate intensity regime, the temporal polariton
beating is suppressed in consequence of exciton-exciton
interaction, At the highest light intensities, self-induced
transmission and multiple pulse breakup are identified as a
signature for carrier density Rabi flopping. Exciton-phonon
scattering is shown to gradually eliminate coherent nonlinear
propagation effects due to enhanced dephasing of the excitonic
polarization. Calculations using the semiconductor Maxwell-
Bloch equations are in qualitative agreement with the
experimental data.