Betz, M. and Göger, G. and Leitenstorfer, A. and Zimmermann, R. and Bichler, Max and Wegscheider, Werner and Abstreiter, Gerhard (2002) Femtosecond Optical Response of Exciton-LO Phonon Quasiparticles in GaAs. physica status solidi a 231 (1), pp. 181-186.
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A weak Fano-type structure one LO phonon energy above the fundamental exciton in bulk GaAs is investigated via highly sensitive femtosecond transmission spectroscopy. It is identified as the response of an exciton-LO phonon quasiparticle. The low-density dephasing time of this excitation is directly determined to be 300 fs. Temperature and carrier density dependent measurements elucidate the properties of this resonance which is inaccessible in linear spectroscopy.
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|Institutions:||Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider|
|Dewey Decimal Classification:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||08 Feb 2010 13:20|
|Last Modified:||13 Mar 2014 12:50|