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Proceedings Paper

Coherent optical processes of semiconductors studied via two-dimensional Fourier transform spectroscopy
Author(s): Alan D. Bristow; Tianhao Zhang; Steven T. Cundiff
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Paper Abstract

Two-dimensional Fourier transform spectroscopy, an extension of four-wave mixing (FWM), is able to resolve numerous aspects of many-body effects and higher-order Coulomb interactions that contribute to the ultrafast dynamics of quantum wells and bulk GaAs resonances. Coherent oscillations between heavy-hole and light-hole excitons - or quantum beats - can be unfolded from the exciton populations by Fourier transforming FWM data with respect to two time-axes. Excitation conditions such as pulse ordering, polarization, tuning and pulse energy can isolate Feynman pathways and highlight the coherent many-body correlations, including those from biexcitons. In addition, the bulk exciton and continuum states are studied more carefully for their dynamics.

Paper Details

Date Published: 14 February 2008
PDF: 10 pages
Proc. SPIE 6892, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII, 68921Q (14 February 2008); doi: 10.1117/12.764618
Show Author Affiliations
Alan D. Bristow, Univ. of Colorado (United States)
National Institute of Standards and Technology (United States)
Tianhao Zhang, Univ. of Colorado (United States)
National Institute of Standards and Technology (United States)
Steven T. Cundiff, Univ. of Colorado (United States)
National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 6892:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII
Jin-Joo Song; Kong-Thon Tsen; Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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