Multi-THz fields exceeding 100 MV/cm: an ultrabroadband source for sub-cycle 
nonlinear optics

Huber, R.; Sell, A.; Junginger, F.; Schubert, O.; Mayer, B.; Mährlein, S.; Schmidt, C.; Kampfrath, Tobias; Wolf, Martin; Brida, D.; Marangoni, M.; Cerullo, G.; Leitenstorfer, A.

doi:10.1117/12.874588

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Multi-THz fields exceeding 100 MV/cm: an ultrabroadband source for sub-cycle nonlinear optics

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Kampfrath, Tobias
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Wolf, Martin
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Huber, R., Sell, A., Junginger, F., Schubert, O., Mayer, B., Mährlein, S., et al. (2011). Multi-THz fields exceeding 100 MV/cm: an ultrabroadband source for sub-cycle nonlinear optics. In Proceedings of SPIE. SPIE. doi:10.1117/12.874588.

Cite as: https://hdl.handle.net/21.11116/0000-000E-44C9-3

Abstract

We present a table-top source of extremely intense multi-THz transients covering the spectral region between 0.1 and 140 THz. Electric field amplitudes of up to 108 MV/cm and pulse durations as short as a single cycle are demonstrated with our hybrid Er:fiber-Ti:sapphire laser system. All THz waveforms are electro-optically detected. This source opens the door to a regime of non-perturbative THz nonlinearities in condensed matter. First examples range from coherent control of excitons, via a breakdown of the power expansion of the nonlinear polarization in bulk semiconductors to twodimensional multi-wave mixing and direct femtosecond spin control by magnetic field excitation.