Laser Excitation of the 1S-2S Transition in Singly-Ionized Helium
Atomic Physics
2023-08-28 v1
Abstract
Precision laser spectroscopy in the extreme ultraviolet of the 1S-2S two-photon transition in singly-ionized helium is a promising route for tests of fundamental physics. We demonstrate laser excitation of this transition in an atomic beam of He, based on an amplified frequency comb pulse at 790 nm combined with its 25 harmonic at 32 nm. A clear resonance is observed with a maximum excitation probability of close to 10 per pulse, and the results are well described by our simulations. This paves the way for high-precision Ramsey-comb spectroscopy of a single helium ion in a Paul trap.
Keywords
Cite
@article{arxiv.2308.13271,
title = {Laser Excitation of the 1S-2S Transition in Singly-Ionized Helium},
author = {Elmer L. Gründeman and Vincent Barbé and Andrés Martínez de Velasco and Charlaine Roth and Mathieu Collombon and Julian J. Krauth and Laura S. Dreissen and Richard Taïeb and Kjeld S. E. Eikema},
journal= {arXiv preprint arXiv:2308.13271},
year = {2023}
}
Comments
Main paper 6 pages with 4 figures, supplementary 4 pages with 5 figures