Improved stabilization scheme for extreme ultraviolet quantum interference experiments
Atomic Physics
2022-05-04 v3 Optics
Abstract
Interferometric pump-probe experiments in the extreme ultraviolet (XUV) domain are experimentally very challenging due to the high phase stability required between the XUV pulses. Recently, an efficient phase stabilization scheme was introduced for seeded XUV free electron lasers (FELs) combining shot-to-shot phase modulation with lock-in detection. This method stabilized the seed laser beampath on the fundamental ultraviolet wavelength to a high degree. Here, we extend this scheme including the stabilization of the XUV beampath, incorporating phase fluctuations from the FEL high gain harmonic generation process. Our analysis reveals a clear signal improvement with the new method compared to the previous stabilization scheme.
Cite
@article{arxiv.2112.03770,
title = {Improved stabilization scheme for extreme ultraviolet quantum interference experiments},
author = {Daniel Uhl and Andreas Wituschek and Ulrich Bangert and Marcel Binz and Carlo Callegari and Michele Di Fraia and Oksana Plekan and Kevin Charles Prince and Giulio Cerullo and Luca Giannessi and Miltcho Danailov and Giuseppe Sansone and Tim Laarmann and Rupert Michiels and Marcel Mudrich and Paolo Piseri and Richard James Squibb and Raimund Feifel and Stefano Stranges and Frank Stienkemeier and Lukas Bruder},
journal= {arXiv preprint arXiv:2112.03770},
year = {2022}
}