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Updated: Jul 13, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Polarization-dependent optical 2D Fourier transform spectroscopy of semiconductors
Tianhao Zhang1, Irina Kuznetsova, Torsten Meier
1JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309-0440, USA.
Abstract:
Optical 2D Fourier transform spectroscopy (2DFTS) provides insight into the many-body interactions in direct gap semiconductors by separating the contributions to the coherent nonlinear optical response. We demonstrate these features of optical 2DFTS by studying the heavy-hole and light-hole excitonic resonances in a gallium arsenide quantum well at low temperature. Varying the polarization of the incident beams exploits selection rules to achieve further separation. Calculations using a full many-body theory agree well with experimental results and unambiguously demonstrate the dominance of many-body physics.
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