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Journal Articles Journal of Physics B: Atomic, Molecular and Optical Physics Year : 2020

Bright, polarization-tunable high repetition rate extreme ultraviolet beamline for coincidence electron–ion imaging

Abstract

After decades of supremacy of the Titanium:Sapphire technology, Ytterbium-based high-order harmonic sources are emerging as a promising alternative for experiments requiring high flux of ultrashort extreme ultraviolet (XUV) radiation. In this article we describe a versatile experimental setup delivering XUV photons in the 10–50 eV range. The use of cascaded high-order harmonic generation enables us to reach 1.9 mW of average power at 18 eV. Several spectral selection schemes are presented, to isolate a single high-harmonic or a group of them. In the perspective of circular dichroism experiments, we produce highly elliptical XUV radiation using resonant elliptical high-harmonic generation, and circularly polarized XUV by bichromatic bicircular high-harmonic generation. As an illustration of the capacities of the beamline, we focus the XUV beam in a coincidence electron–ion imaging spectrometer, where we measure the photoelectron momentum angular distributions of xenon monomers and dimers
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Dates and versions

hal-03005114 , version 1 (14-12-2023)

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A Comby, E Bloch, S Beauvarlet, D Rajak, S Beaulieu, et al.. Bright, polarization-tunable high repetition rate extreme ultraviolet beamline for coincidence electron–ion imaging. Journal of Physics B: Atomic, Molecular and Optical Physics, 2020, 53 (23), pp.234003. ⟨10.1088/1361-6455/abbe27⟩. ⟨hal-03005114⟩
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