Super-resolution stimulated X-ray Raman spectroscopy.

ABSTRACT: Propagation of intense X-ray pulses through dense media has led to the observation of phenomena such as atomic X-ray lasing^1,2, self-induced transparency³ and stimulated X-ray Raman scattering (SXRS)⁴. SXRS has been long predicted as a means to launch and probe valence-electron wavepackets and as a building block for nonlinear X-ray spectroscopies^5,6. However, experimental observations of SXRS to date^4,7,8 have not provided spectroscopic information, and theoretical modelling has largely implemented hard-to-realize phase-coherent attosecond pulses. Here we demonstrate SXRS with spectroscopic precision, that is, detection of valence-excited states in neon with a near Fourier-limited joint energy-time resolution of 0.1 eV-40 fs. We used

SUBMITTER: Li K 

PROVIDER: S-EPMC12267062 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature