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