49 W carrier-envelope-phase-stable few-cycle 2.1 µm OPCPA at 10 kHz

MF Seeger, D Kammerer, J Blöchl, M Neuhaus… - Optics …, 2023 - opg.optica.org
We demonstrate a mid-infrared optical parametric chirped pulse amplifier (OPCPA),
delivering 2.1 µm center wavelength pulses with 20 fs duration and 4.9 mJ energy at 10 kHz …

[PDF][PDF] The beam transport system for the Small Quantum Systems instrument at the European XFEL: optical layout and first commissioning results

T Mazza, TM Baumann, R Boll, A De Fanis… - Journal of …, 2023 - journals.iucr.org
The Small Quantum Systems instrument is one of the six operating instruments of the
European XFEL, dedicated to the atomic, molecular and cluster physics communities. The …

Femtosecond multimodal imaging with a laser-driven X-ray source

A Doherty, S Fourmaux, A Astolfo, R Ziesche… - Communications …, 2023 - nature.com
Laser-plasma accelerators are compact linear accelerators based on the interaction of high-
power lasers with plasma to form accelerating structures up to 1000 times smaller than …

Investigating ultrafast structural dynamics using high repetition rate x-ray FEL radiation at European XFEL

T Tschentscher - The European Physical Journal Plus, 2023 - epjplus.epj.org
European XFEL is an international facility providing hard and soft x-ray free-electron laser
radiation for user experiments with a wide range of scientific applications. Its …

[HTML][HTML] Versatile and robust reconstruction of extreme-ultraviolet pulses down to the attosecond regime

GL Dolso, G Inzani, N Di Palo, B Moio, F Medeghini… - APL Photonics, 2023 - pubs.aip.org
A reliable and complete temporal characterization of ultrashort pulses is a crucial requisite
for the correct interpretation of time-resolved experiments. This task is particularly …

Inverse Problems in Pump–Probe Spectroscopy

DS Tikhonov, D Garg, M Schnell - Photochem, 2024 - mdpi.com
Ultrafast pump–probe spectroscopic studies allow for deep insights into the mechanisms
and timescales of photophysical and photochemical processes. Extracting valuable …

[HTML][HTML] Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser

R Guillemin, L Inhester, M Ilchen, T Mazza, R Boll… - Structural …, 2023 - pubs.aip.org
Dynamical response of water exposed to x-rays is of utmost importance in a wealth of
science areas. We exposed isolated water isotopologues to short x-ray pulses from a free …

A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL

M Agåker, J Söderström, TM Baumann… - Synchrotron …, 2024 - journals.iucr.org
A 1D imaging soft X-ray spectrometer installed on the small quantum systems (SQS)
scientific instrument of the European XFEL is described. It uses movable cylindrical constant …

Capturing nonlinear electron dynamics with fully characterised attosecond X-ray pulses

L Funke, M Ilchen, K Dingel, T Mazza, T Mullins… - arxiv preprint arxiv …, 2024 - arxiv.org
Attosecond X-ray pulses are the key to studying electron dynamics at their natural time scale
involving specific electronic states. They are promising to build the conceptual bridge …

Sub-50 fs temporal resolution in an FEL-optical laser pump-probe experiment at FLASH2

S Kumar, N Schirmel, B Erk, B Manschwetus… - Optics …, 2024 - opg.optica.org
High temporal resolution is essential for ultra-fast pump-probe experiments. Arrival time jitter
and drift measurements, as well as their control, become critical especially when combining …