Three-dimensional electronic spectroscopy of excitons in GaAs quantum wells

Daniel Turner, Katherine W. Stone, Kenan Gundogdu, Keith A. Nelson

Research output: Contribution to journalArticle

Abstract

We demonstrate three-dimensional (3D) electronic Fourier transform spectroscopy of GaAs quantum wells using four fully phase-coherent, noncollinear optical fields. Since the full complex signal field is measured as a function of all three time intervals, nearly every peak in the resulting 3D spectral solid arises from a distinguishable sequence of transitions represented by a single Feynman pathway. We use the 3D spectral peaks to separate two pathways involving weakly bound mixed biexcitons generated in different time orders. In the process, we reveal a peak that was previously obscured by a correlated but unbound exciton pair coherence. We also demonstrate a calibration procedure for the carrier frequency which yields biexciton binding energy values with high accuracy.

Original languageEnglish (US)
Article number144510
JournalJournal of Chemical Physics
Volume131
Issue number14
DOIs
StatePublished - 2009

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Binding energy
Semiconductor quantum wells
Fourier transforms
excitons
quantum wells
Spectroscopy
Calibration
electronics
spectroscopy
carrier frequencies
binding energy
intervals
LDS 751
gallium arsenide

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Three-dimensional electronic spectroscopy of excitons in GaAs quantum wells. / Turner, Daniel; Stone, Katherine W.; Gundogdu, Kenan; Nelson, Keith A.

In: Journal of Chemical Physics, Vol. 131, No. 14, 144510, 2009.

Research output: Contribution to journalArticle

Turner, Daniel ; Stone, Katherine W. ; Gundogdu, Kenan ; Nelson, Keith A. / Three-dimensional electronic spectroscopy of excitons in GaAs quantum wells. In: Journal of Chemical Physics. 2009 ; Vol. 131, No. 14.
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