Journal
CHEMICAL PHYSICS
Volume 413, Issue -, Pages 102-111Publisher
ELSEVIER
DOI: 10.1016/j.chemphys.2012.10.018
Keywords
Nonlinear spectroscopy; Homogeneous broadening
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We present a review on the excitonic homogeneous linewidth, with an emphasis on original experiments by means of nonlinear spectral hole-burning. We address three specific aspects of the excitonic homogeneous broadening: (i) the variation of the homogeneous linewidth with the sonication energy, revealing the influence of extrinsic processes such as exciton-defect interactions, (ii) the collision-induced broadening due to exciton-exciton interactions, investigated by power-dependent measurements, and (iii) the phonon-induced dephasing due to exciton-phonon interactions, deduced from temperature-dependent experiments. We discuss the specific properties of one-dimensional excitons in carbon nanotubes in the context of the homogeneous broadening. (C) 2012 Elsevier B.V. All rights reserved.
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