Paraexciton polariton propagation beats in cuprous oxide

In time‐resolved transmission spectroscopy of the 1Sparaexciton in cuprous oxide a temporal broadening and oscillations of the transmitted pulse for several tens of nanoseconds are observed. These observations are interpreted as polariton propagation beats and indicate a long paraexciton dephasing t...

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Veröffentlicht in:	Physica status solidi. C 2009-02, Vol.6 (2), p.556-559
Hauptverfasser:	Brandt, Jan, Fröhlich, Dietmar, Sandfort, Christian, Bayer, Manfred, Stolz, Heinrich
Format:	Artikel
Sprache:	eng
Schlagworte:	71.35.CC 71.36.+c 78.20.−e
Online-Zugang:	Volltext
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Zusammenfassung:	In time‐resolved transmission spectroscopy of the 1Sparaexciton in cuprous oxide a temporal broadening and oscillations of the transmitted pulse for several tens of nanoseconds are observed. These observations are interpreted as polariton propagation beats and indicate a long paraexciton dephasing time in the nanosecond range.We discuss the dependence of the beat period on the external magnetic field and propose a model to calculate polariton beats for an inhomogeneously broadened resonance. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:	1862-6351 1610-1634 1610-1642
DOI:	10.1002/pssc.200880363