Title

2D Fourier Spectroscopy Of Disordered Quantum Wells

Keywords

2d Fourier spectroscopy; Disordered quantum wells; Excitons; Nonlinear optical response

Abstract

We consider the problem of coherent coupling between spatially separated exciton states in disordered quantum wells (QW) from the perspective of two-dimensional (2d) Fourier spectroscopy, which is sensitive to interaction between excitations. We present the basic theory of spectroscopy of QW that demonstrate split exciton resonances in linear spectra, which is characteristic for long interfacial inhomogeneities. We find that the coherent coupling is governed by the relation between the disorder correlation length rc and the characteristic length of Coulomb correlations RI. If rc ≫ RI the coherent coupling is absent and 2d spectra are simply elongated along the diagonal (inhomogeneously broadened). In the opposite limit coupling exists and manifests itself in the form of respective off-diagonal peaks in 2d spectra. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Publication Date

4-1-2011

Publication Title

Physica Status Solidi (C) Current Topics in Solid State Physics

Volume

8

Issue

4

Number of Pages

1141-1144

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1002/pssc.201000849

Socpus ID

79953746043 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79953746043

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