title: Polarization-dependent optical 2D Fourier transform spectroscopy of semiconductors.
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.
authors.affiliation: JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309-0440, USA.
authors.forename: Tianhao
authors.initials: T
authors.lastname: Zhang
authors.forename: Irina
authors.initials: I
authors.lastname: Kuznetsova
authors.forename: Torsten
authors.initials: T
authors.lastname: Meier
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Li
authors.forename: Richard P
authors.initials: RP
authors.lastname: Mirin
authors.forename: Peter
authors.initials: P
authors.lastname: Thomas
authors.forename: Steven T
authors.initials: ST
authors.lastname: Cundiff
mesh_terms: D008280:Magnetics; D012666:Semiconductors; D013055:Spectrophotometry, Infrared / Q000379:methods*