Nonperturbative Interband Response of a Bulk InSb Semiconductor Driven Off Resonantly by Terahertz Electromagnetic Few-Cycle Pulses

URN to cite this document:: urn:nbn:de:bvb:355-epub-308878

Junginger, F. ; Mayer, B. ; Schmidt, C. ; Schubert, Olaf ; Mährlein, S. ; Leitenstorfer, A. ; Huber, Rupert ; Pashkin, Alexej

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Date of publication of this fulltext: 15 Oct 2014 11:27

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Abstract

Intense multiterahertz pulses are used to study the coherent nonlinear response of bulk InSb by means of field-resolved four-wave mixing spectroscopy. At amplitudes above 5 MV/cm the signals show a clear temporal substructure which is unexpected in perturbative nonlinear optics. Simulations based on a model of a two-level quantum system demonstrate that in spite of the strongly off-resonant ...