1 research outputs found
Extreme ultraviolet-excited time-resolved luminescence spectroscopy using an ultrafast table-top high-harmonic generation source
We present a table-top extreme ultraviolet (XUV) beamline for measuring time-
and frequency-resolved XUV excited optical luminescence (XEOL) with additional
femtosecond-resolution XUV transient absorption spectroscopy functionality. XUV
pulses are generated via high-harmonic generation using a near-infrared pulse
in a noble gas medium, and focused to excite luminescence from a solid sample.
The luminescence is collimated and guided into a streak camera, where its
spectral components are temporally resolved with picosecond temporal
resolution. We time-resolve XUV excited luminescence and compare the results to
luminescence decays excited at longer wavelengths for three different materials
: (i) sodium salicylate, an often used XUV scintillator, (ii) fluorescent
labeling molecule 4-carbazole benzoic acid (CB), and (iii) a zirconium metal
oxo-cluster labeled with CB, which is a photoresist candidate for
extreme-ultraviolet lithography. Our results establish time-resolved XEOL as a
new technique to measure transient XUV-driven phenomena in solid-state samples,
and identify decay mechanisms of molecules following XUV and soft-X-ray
excitation