171 citations · 1.9k across the 36 of their papers we have counts for
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Ramsey-comb spectroscopy with intense ultrashort laser pulses
Jonas Morgenweg, Itan Barmes, Kjeld S. E. Eikema
Optical frequency combs based on mode-locked lasers have revolutionised the field of metrology and precision spectroscopy by providing precisely calibrated optical frequencies and…
Novel techniques in VUV high-resolution spectroscopy
W. Ubachs, E. J. Salumbides, K. S. E. Eikema +2
Novel VUV sources and techniques for VUV spectroscopy are reviewed. Laser-based VUV sources have been developed via non-linear upconversion of laser pulses in the nanosecond (ns),…
High-Precision Spectroscopy with Counter-Propagating Femtosecond Pulses
Itan Barmes, Stefan Witte, Kjeld S. E. Eikema
An experimental realization of high-precision direct frequency comb spectroscopy using counter-propagating femtosecond pulses on two-photon atomic transitions is presented. Doppler…
Bounds on fifth forces from precision measurements on molecules
E. J. Salumbides, J. C. J. Koelemeij, J. Komasa +3
Highly accurate results from frequency measurements on neutral hydrogen molecules H_2, HD and D_2 as well as the HD^+ ion can be interpreted in terms of constraints on possible fif…
The Fundamental Vibration of Molecular Hydrogen
Gareth. D. Dickenson, Ming Li Niu, Edcel J. Salumbides +4
The fundamental ground tone vibration of H2, HD, and D2 is determined to an accuracy of 2 x 10^-4 cm^-1 from Doppler-free laser spectroscopy in the collisionless environment of a m…
Ultra-broadband extreme-ultraviolet lensless imaging of extended complex structures
Stefan Witte, Vasco T. Tenner, Daniël W. E. Noom +1
Lensless imaging is an elegant approach to high-resolution microscopy, which is rapidly gaining popularity in applications where imaging optics are problematic. However, current le…