Nonlinear response of semiconductors driven by intense THz pulses

A. Pashkin; F. Junginger; C. Schmidt; B. Mayer; O. Schubert; S. Mährlein; R. Huber; A. Leitenstorfer

doi:10.1117/12.910002

20 February 2012 Nonlinear response of semiconductors driven by intense THz pulses

A. Pashkin, F. Junginger, C. Schmidt, B. Mayer, O. Schubert, S. Mährlein, R. Huber, A. Leitenstorfer

Proceedings Volume 8260, Ultrafast Phenomena and Nanophotonics XVI; 82600M (2012) https://doi.org/10.1117/12.910002
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We present a review of our recent nonlinear spectroscopy experiments on bulk semiconductors performed using a novel source of ultra-intense multi-THz transients. The field-induced interband optical absorption in InP is studied on subcycle timescales. Our simulations corroborate the Franz-Keldysh effect as the main reason for the observed optical anomalies. The time-resolved four-wave mixing signals generated in InSb demonstrate clear signatures of a nonperturbative excitation regime and can be qualitatively reproduced by a simplified model of a two-level system driven far from the resonance.

Citation Download Citation

A. Pashkin, F. Junginger, C. Schmidt, B. Mayer, O. Schubert, S. Mährlein, R. Huber, and A. Leitenstorfer "Nonlinear response of semiconductors driven by intense THz pulses", Proc. SPIE 8260, Ultrafast Phenomena and Nanophotonics XVI, 82600M (20 February 2012); https://doi.org/10.1117/12.910002

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