Extreme ultraviolet wave packet interferometry of the autoionizing HeNe dimer

2022/05/25 by D. Uhl, Uhl, Daniel, Andreas Wituschek +51
Physics and Astronomy · #Laser-Matter Interactions and Applications #Advanced Fiber Laser Technologies #Advanced Chemical Physics Studies

paper · pdf · doi:10.48550/arxiv.2205.12885

Abstract

Femtosecond extreme ultraviolet wave packet interferometry (XUV-WPI) was applied to study resonant inter-atomic Coulombic decay (ICD) in the HeNe dimer. The high demands on phase stability and sensitivity for vibronic XUV-WPI of molecular-beam targets are met using an XUV phase-cycling scheme. The detected quantum interferences exhibit vibronic dephasing and rephasing signatures along with an ultrafast decoherence assigned to the ICD process. A Fourier analysis reveals the molecular absorption spectrum with high resolution. The demonstrated experiment shows a promising route for the real-time analysis of ultrafast ICD processes with both high temporal and spectral resolution.

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