Coherent optical processes of semiconductors studied via two-dimensional Fourier transform spectroscopy

Alan D. Bristow; Tianhao Zhang; Steven T. Cundiff

doi:10.1117/12.764618

14 February 2008 Coherent optical processes of semiconductors studied via two-dimensional Fourier transform spectroscopy

Alan D. Bristow, Tianhao Zhang, Steven T. Cundiff

Author Affiliations +

Proceedings Volume 6892, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII; 68921Q (2008) https://doi.org/10.1117/12.764618
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

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.

Citation Download Citation

Alan D. Bristow, Tianhao Zhang, and Steven T. Cundiff "Coherent optical processes of semiconductors studied via two-dimensional Fourier transform spectroscopy", Proc. SPIE 6892, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII, 68921Q (14 February 2008); https://doi.org/10.1117/12.764618

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