Improved Measurement of the Hydrogen 1S - 2S Transition Frequency
Atomic Physics
2011-11-15 v1
Abstract
We have measured the 1S - 2S transition frequency in atomic hydrogen via two photon spectroscopy on a 5.8 K atomic beam. We obtain Hz for the hyperfine centroid. This is a fractional frequency uncertainty of improving the previous measure- ment by our own group [M. Fischer et al., Phys. Rev. Lett. 92, 230802 (2004)] by a factor of 3.3. The probe laser frequency was phase coherently linked to the mobile cesium fountain clock FOM via a frequency comb.
Cite
@article{arxiv.1107.3101,
title = {Improved Measurement of the Hydrogen 1S - 2S Transition Frequency},
author = {Christian G. Parthey and Arthur Matveev and Janis Alnis and Birgitta Bernhardt and Axel Beyer and Ronald Holzwarth and Aliaksei Maistrou and Randolf Pohl and Katharina Predehl and Thomas Udem and Tobias Wilken and Nikolai Kolachevsky and Michel Abgrall and Daniele Rovera and Christophe Salomon and Philippe Laurent and Theodor W. Hänsch},
journal= {arXiv preprint arXiv:1107.3101},
year = {2011}
}
Comments
5 pages, 4 figures