Photoionisation loading of large Sr+ ion clouds with ultrafast pulses
Quantum Physics
2015-05-13 v2
Abstract
This paper reports on photoionisation loading based on ultrafast pulses of singly-ionised strontium ions in a linear Paul trap. We take advantage of an autoionising resonance of Sr neutral atoms to form Sr+ by two-photon absorption of femtosecond pulses at a wavelength of 431nm. We compare this technique to electron-bombardment ionisation and observe several advantages of photoionisation. It actually allows the loading of a pure Sr+ ion cloud in a low radio-frequency voltage amplitude regime. In these conditions up to 4x10^4 laser-cooled Sr+ ions were trapped.
Keywords
Cite
@article{arxiv.0811.3399,
title = {Photoionisation loading of large Sr+ ion clouds with ultrafast pulses},
author = {Sébastien Removille and Romain Dubessy and Quentin Glorieux and Samuel Guibal and Thomas Coudreau and Luca Guidoni and Jean-Pierre Likforman},
journal= {arXiv preprint arXiv:0811.3399},
year = {2015}
}