HELIOS--A laboratory based on high-order harmonic generation of extreme ultraviolet photons for time-resolved spectroscopy

Autor: Johan Söderström, Joachim Andreas Terschlüsen, Jan-Erik Rubensson, M. Svanqvist, Johan Forsberg, Ute B. Cappel, N. Krebs, Stefan Plogmaker, Hans Siegbahn
Rok vydání: 2016
Předmět:
Zdroj: The Review of scientific instruments. 86(12)
ISSN: 1089-7623
Popis: In this paper, we present the HELIOS (High Energy Laser Induced Overtone Source) laboratory, an in-house high-order harmonic generation facility which generates extreme ultraviolet (XUV) photon pulses in the range of 15-70 eV with monochromatized XUV pulse lengths below 35 fs. HELIOS is a source for time-resolved pump-probe/two-color spectroscopy in the sub-50 fs range, which can be operated at 5 kHz or 10 kHz. An optical parametric amplifier is available for pump-probe experiments with wavelengths ranging from 240 nm to 20 000 nm. The produced XUV radiation is monochromatized by a grating in the so-called off-plane mount. Together with overall design parameters, first monochromatized spectra are shown with an intensity of 2 ⋅ 1010 photons/s (at 5 kHz) in the 29th harmonic, after the monochromator. The XUV pulse duration is measured to be
Databáze: OpenAIRE