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Femtosecond Optical Response of Exciton-LO Phonon Quasiparticles in GaAs

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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Abstract

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.

Item Type:Article
Institutions: Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider
Identification Number:
ValueType
10.1002/1521-3951(200205)231:1<181::AID-PSSB181>3.0.CO;2-XDOI
Classification:
NotationType
71.35.Gg; 78.47.+p; 78.66.Fd; S7.12PACS
Subjects:500 Science > 530 Physics
Status:Published
Refereed:Unknown
Created at the University of Regensburg:Unknown
Owner:Martin Kaiser
Deposited On:08 Feb 2010 14:20
Last Modified:21 Jul 2011 00:19
Item ID:12741
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