PhotonDiag 2020

Session

Spectral Measurements

Session 6

27 Oct 2020, 10:30

Virtual

Conveners

Spectral Measurements

• Joan Vila-Comamala (Institute for Biomedical Engineering)

Description

Session 6

31. Resolving spectro-temporal dynamics with all-XUV-optical FEL transient absorption spectroscopy

Christian Ott

27/10/2020, 10:30

Spectral measurements

Oral presentation

Extreme ultraviolet (XUV) and x-ray free-electron lasers (FELs), delivering intense ultrashort pulses in the femtosecond regime and even below, create new opportunities for site-specific light-matter interaction, and eventually to control the intrinsic quantum dynamics of a system with atomic scale resolution. Using visible lasers, the technique of ultrafast transient absorption spectroscopy...

71. High-Resolution Pulse-to-Pulse Spectral Monitoring for SwissFel

Yunieski Arbelo Pena

27/10/2020, 11:00

Spectral measurements

Oral presentation

The spectrum of SASE XFEL sources exhibits strong variations pulse-to-pulse. As a consequence, XFEL-driven experiments, XFEL optimization or “new-modes” development rely on X-ray spectrometers functioning on a shot-to-shot basis.
We will discuss the potentiality of the setup used at SwissFEL, as well as results obtained during its commissioning.
Several arrangements of transmission...

28. Flat field soft X-ray spectrometer based on reflection zone plates

Alexei Erko (Institute for Applied Photonics)

27/10/2020, 11:20

Spectral measurements

Oral presentation

The reflection zone plate (RZP), as a wavelength-dispersive optical element, has been successfully used in several designs of femtosecond (fs) spectrometers and monochromators for soft X-rays [1]. While demonstrating its evident advantages in comparison with conventional VLS gratings, like a high resolving power at the design energy and an excellent signal-to-noise ratio, RZPs on planar...