65 citations · 121 across the 4 of their papers we have counts for
4 papers
Precision spectroscopy of helium in a magic wavelength optical dipole trap
R. J. Rengelink, Y. van der Werf, R. P. M. J. W. Notermans +4
Improvements in both theory and frequency metrology of few-electron systems such as hydrogen and helium have enabled increasingly sensitive tests of quantum electrodynamics (QED),…
Comparison of spectral linewidths for quantum degenerate bosons and fermions
R. P. M. J. W. Notermans, R. J. Rengelink, W. Vassen
We observe a dramatic difference in optical line shapes of a Bose-Einstein condensate and a degenerate Fermi gas by measuring the 1557-nm …
A simple 2 W continuous-wave laser system for trapping ultracold metastable helium atoms at the 319.8 nm magic wavelength
R. J. Rengelink, R. P. M. J. W. Notermans, W. Vassen
High precision spectroscopy on the transition is possible in ultracold optically trapped helium but the accuracy is limited by the ac-Stark shift in…
Magic wavelengths for the transition in helium
Remy Notermans, Robert Rengelink, Ton van Leeuwen +1
We have calculated ac polarizabilities of the and states of both He and He in the range 318 nm to 2.5 m and determined the magic wavelengths at which…