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arXiv · 2310.06619

Nonlinear Generation, Compression and Spatio-Temporal Analysis of GV/cm-Class Femtosecond Mid-Infrared Transients

Christoph Schoenfeld·Lennart Feuerer·Alexander-Cornelius Heinrich·Alfred Leitenstorfer·Davide Bossini
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Abstract

A thin-disk regenerative amplifier with 3 kHz repetition rate pumps a second-order nonlinear mixing scheme providing femtosecond transients of maximum electric field strength beyond 330 MV/cm at a center frequency of 45 THz. This value surpasses field conditions present at sub-molecular dimensions of matter. The inherent competition between efficiency and bandwidth in parametric downconversion is overcome with a third-order nonlinear step of self-phase modulation. The high repetition rate, versatility, beam quality and passive phase stability of our system support advanced spectroscopic approaches like electro-optic sampling. With this technique, we study solitonic self-compression and octave-spanning supercontinua directly on a subcycle scale.

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Christoph Schoenfeld, Lennart Feuerer, Alexander-Cornelius Heinrich, Alfred Leitenstorfer, Davide Bossini. 2023-10-10. Nonlinear Generation, Compression and Spatio-Temporal Analysis of GV/cm-Class Femtosecond Mid-Infrared Transients. https://arxiv.org/abs/2310.06619

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