Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 131, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3245964
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Funding
- National Science Foundation [CHE-0616939]
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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. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3245964]
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