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21 February 2011 Multi-THz fields exceeding 100 MV/cm: an ultrabroadband source for sub-cycle nonlinear optics
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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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Huber, A. Sell, F. Junginger, O. Schubert, B. Mayer, S. Mährlein, C. Schmidt, T. Kampfrath, M. Wolf, D. Brida, M. Marangoni, G. Cerullo, and A. Leitenstorfer "Multi-THz fields exceeding 100 MV/cm: an ultrabroadband source for sub-cycle nonlinear optics", Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 79170C (21 February 2011); https://doi.org/10.1117/12.874588
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