Göger, G. and Betz, M. and Leitenstorfer, A. and Bichler, Max and Wegscheider, Werner and Abstreiter, Gerhard (2000) Ultrafast Optical Spectroscopy of Large-Momentum Excitons in GaAs. Physical Review Letters 84 (25), pp. 5812-5815.
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Highly energetic excitons with wave vectors much larger than that of an absorbed photon are excited in thin GaAs films. We observe propagation beats between three polariton modes up to 300 meV above the absorption edge employing femtosecond transmission spectroscopy. The dispersion relations of the coherent excitations are measured. Ultrafast exciton damping via scattering with nonequilibrium ...
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|Date:||19 June 2000|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||30 Nov 2009 13:27|
|Last Modified:||13 Mar 2014 12:10|