Coherent dynamics of excitonic and biexcitonic wave packets in semiconductor superlattices
Leisching, P. ; Ott, R. ; Bolivar, P. Haring ; Dekorsy, T. ; Bakker, H. J. ; Roskos, H. G. ; Kurz, H. ; Köhler, K.
Springer
Published 1995
Springer
Published 1995
| ISSN: |
0392-6737
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|---|---|
| Keywords: |
Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter ; Excitons and related phenomena (including electron-hole drops) ; Conference proceedings
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Summary We report on the observation of an electric-field-induced electric-dipole moment of biexcitonic molecules in a GaAs/Al0.3Ga0.7As superlattice. The macroscopic oscillating electric field, associated with the microscopic wave packet dipole moments, is monitored by time-resolved transmittive electro-optic sampling. The field dependence of the biexcitonic binding energy is detected by transient four-wave mixing. From these experiments, an ultrafast non-resonant excitation mechanism of biexcitons is inferred.
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| Type of Medium: |
Electronic Resource
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| URL: |