Congratulations to Dr. Nathalie Nagl on her successful PhD defense about "A New Generation of Ultrafast Oscillators for Mid-Infrared Applications". Nathalie started her PhD work in the attoworld-team in 2018. For the first time, she realized three few-cycle Cr:ZnS/ZnSe laser systems based on single-emitter pump laser diodes. The innovative combination of direct diode-pumping with ultrafast Kerr-lens mode-locked Cr:ZnS/ZnSe laser technology led to highly stable, low-noise, and femtosecond output radiation at wavelengths between 2-3 μm, facilitating the direct generation of broadband mid-infrared (MIR) spectra already at the milliwatt-level. Moreover, the oscillators’ performance matches and even exceeds that of state-of-the-art systems based on mature fiber-laser-pumped technologies. These results serve as a foundation for a new generation of few-cycle mid-infrared light sources, capable of performing spectroscopic measurements at unprecedented efficiency and shot noise limited sensitivity, while paving the way towards a more accessible alternative to synchrotron-like infrared radiation. The pioneering approach not only opens the avenue into the study of complex biological systems in the entire molecular fingerprint region, but also future MIR applications.