147 citations · 317 across the 4 of their papers we have counts for
4 papers · 1 filter
The optical calcium frequency standards of PTB and NIST
U. Sterr, C. Degenhardt, H. Stoehr +7
We describe the current status of the Ca optical frequency standards with laser-cooled neutral atoms realized in two different laboratories for the purpose of developing a possible…
Wavelength dependent ac-Stark shift of the 1S0 - 3P1 transition at 657 nm in Ca
Carsten Degenhardt, Hardo Stoehr, Uwe Sterr +2
We have measured the ac-Stark shift of the 4s2 1S0 - 4s4p 3P1 line in 40Ca for perturbing laser wavelengths between 780 nm and 1064 nm with a time domain Ramsey-Borde atom interfer…
Photoassociation spectroscopy of cold calcium atoms
C. Degenhardt, T. Binnewies, G. Wilpers +4
Photoassociation spectroscopy experiments on 40Ca atoms close to the dissociation limit 4s4s 1S0 - 4s4p 1P1 are presented. The vibronic spectrum was measured for detunings of the p…
An Optical Clock with Ultracold Neutral Atoms
G. Wilpers, T. Binnewies, C. Degenhardt +3
We demonstrate how to realize an optical clock with neutral atoms that is competitive to the currently best single ion optical clocks in accuracy and superior in stability. Using u…