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arXiv · 1305.7084

Systematic investigation of THz-induced excitonic Rabi splitting

M. Teich·M. Wagner·D. Stehr·H. Schneider·M. Helm·G. Khitrova·H. M. Gibbs·A. C. Klettke·S. Chatterjee·M. Kira·S. W. Koch
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Abstract

Weak near-infrared and strong terahertz excitation are applied to study excitonic Rabi splitting in (GaIn)As/GaAs quantum wells. Pronounced anticrossing behavior of the split peaks is observed for different terahertz intensities and detunings relative to the intraexcitonic heavy-hole 1s-2p-transition. At intermediate to high electric fields the splitting becomes highly asymmetric and exhibits significant broadening. A fully microscopic theory is needed to explain the experimental results. Comparisons with a two-level model reveal the increasing importance of higher excitonic states at elevated excitation levels.

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M. Teich, M. Wagner, D. Stehr, H. Schneider, M. Helm, G. Khitrova, H. M. Gibbs, A. C. Klettke, S. Chatterjee, M. Kira, S. W. Koch. 2013-05-30. Systematic investigation of THz-induced excitonic Rabi splitting. https://doi.org/10.1103/physrevb.89.115311

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