188 citations · 621 across the 7 of their papers we have counts for
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XUV frequency comb metrology on the ground state of helium
Dominik Z. Kandula, Christoph Gohle, Tjeerd J. Pinkert +2
The operation of a frequency comb at extreme ultraviolet (XUV) wavelengths based on pair-wise amplification and nonlinear upconversion to the 15th harmonic of pulses from a frequen…
Extreme ultraviolet frequency comb metrology
Dominik Z. Kandula, Christoph Gohle, Tjeerd J. Pinkert +2
The remarkable precision of frequency comb (FC) lasers is transferred to the extreme ultraviolet (XUV, wavelengths shorter than 100 nm), a frequency region previously not accessabl…
Frequency metrology on the 4s 2S1/2 - 4p 2P1/2 transition in the calcium ion for a comparison with quasar data
A. L. Wolf, S. A. van den Berg, C. Gohle +3
High accuracy frequency metrology on the 4s 2S1/2 - 4p 2P1/2 transition in calcium ions is performed using laser cooled and crystallized ions in a linear Paul trap. Calibration is…