报告摘要：

    Simultaneous access to multiple parts of the electromagnetic spectrum offers unique capabilities for sensing, medical diagnostics, and non-destructive testing. In this context, of particular importance are field-resolved measurements in the THz and long-wave infrared range, where the characteristic femtosecond-timescale response of a complex medium is probed when illuminated by an ultra-broadband optical pulse. Conventionally, this demand is addressed by air plasma or spintronic emission schemes, which require high pulse excitation energies and rely on detection schemes providing a limited dynamic range. Instead, we propose new organic nonlinear materials compatible with compact fiber-based femtosecond lasers to cover the 1–35 THz spectral range (300–8.5 μm of wavelength) with ~30 dB of dynamic range in a single scan. In addition to generation, efficient field-resolved detection at room temperature using the linear Pockels effect is natively offered by these materials. Future directions aiming to improve their sub-optimal spectral flatness will also be covered.
报告人简介：

    Dr. Łukasz Sterczewski is an Associate Professor at Wrocław University of Science and Technology (Wroclaw Tech), Poland, specializing in lasers and spectroscopic techniques in the mid-infrared and terahertz (THz) ranges. Drawing on experience from renowned institutions including Princeton, Caltech, and NASA’s Jet Propulsion Laboratory, Dr. Sterczewski now serves as a research group leader at Wroclaw Tech. He currently leads a groundbreaking project on broadband, chip-based terahertz spectroscopy, funded by a European Research Council (ERC) Starting Grant. By bridging the fields of electronics and optics, his work drives innovation across a diverse spectrum of applications, from advanced medical diagnostics to the search of organic molecules in space.