Wim Ubachs
Wim Ubachs
Professor of Physics, VU University, Amsterdam, Netherlands
Verified email at - Homepage
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Indication of a cosmological variation of the proton-electron mass ratio based on laboratory measurement and reanalysis of H 2 spectra
E Reinhold, R Buning, U Hollenstein, A Ivanchik, P Petitjean, W Ubachs
Physical Review Letters 96 (15), 151101, 2006
Direct measurement of the Rayleigh scattering cross section in various gases
M Sneep, W Ubachs
Journal of Quantitative Spectroscopy and Radiative Transfer 92 (3), 293-310, 2005
Lamb shift measurement in the 1 t 1 S ground state of helium
KSE Eikema, W Ubachs, W Vassen, W Hogervorst
Physical Review A 55 (3), 1866, 1997
Determination of the ionization and dissociation energies of the hydrogen molecule
J Liu, EJ Salumbides, U Hollenstein, JCJ Koelemeij, KSE Eikema, ...
The Journal of chemical physics 130 (17), 174306, 2009
A source of 2 terawatt, 2.7 cycle laser pulses based on noncollinear optical parametric chirped pulse amplification
S Witte, RT Zinkstok, AL Wolf, W Hogervorst, W Ubachs, KSE Eikema
Optics Express 14 (18), 8168-8177, 2006
Extreme ultraviolet frequency comb metrology
DZ Kandula, C Gohle, TJ Pinkert, W Ubachs, KSE Eikema
Physical Review Letters 105 (6), 063001, 2010
Deep-ultraviolet quantum interference metrology with ultrashort laser pulses
S Witte, RT Zinkstok, W Ubachs, W Hogervorst, KSE Eikema
Science 307 (5708), 400-403, 2005
A stringent limit on a drifting proton-to-electron mass ratio from alcohol in the early universe
J Bagdonaite, P Jansen, C Henkel, HL Bethlem, KM Menten, W Ubachs
Science 339 (6115), 46-48, 2013
Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD+
J Biesheuvel, JP Karr, L Hilico, KSE Eikema, W Ubachs, JCJ Koelemeij
Nature communications 7 (1), 1-7, 2016
Fundamental vibration of molecular hydrogen
GD Dickenson, ML Niu, EJ Salumbides, J Komasa, KSE Eikema, ...
Physical review letters 110 (19), 193601, 2013
Bounds on fifth forces from precision measurements on molecules
EJ Salumbides, JCJ Koelemeij, J Komasa, K Pachucki, KSE Eikema, ...
Physical Review D 87 (11), 112008, 2013
Experimental verification of Rayleigh scattering cross sections
H Naus, W Ubachs
Optics Letters 25 (5), 347-349, 2000
Efficient temporal compression of coherent nanosecond pulses in a compact SBS generator-amplifier setup
S Schiemann, W Ubachs, W Hogervorst
IEEE Journal of quantum electronics 33 (3), 358-366, 1997
Keck telescope constraint on cosmological variation of the proton-to-electron mass ratio
AL Malec, R Buning, MT Murphy, N Milutinovic, SL Ellison, JX Prochaska, ...
Monthly Notices of the Royal Astronomical Society 403 (3), 1541-1555, 2010
A high-velocity narrow absorption line outflow in the quasar J212329. 46− 005052.9
F Hamann, N Kanekar, JX Prochaska, MT Murphy, S Ellison, AL Malec, ...
Monthly Notices of the Royal Astronomical Society 410 (3), 1957-1974, 2011
Precision VUV spectroscopy of Ar I at 105 nm
I Velchev, W Hogervorst, W Ubachs
Journal of Physics B: Atomic, Molecular and Optical Physics 32 (17), L511, 1999
Determination of the ionization and dissociation energies of the deuterium molecule
J Liu, D Sprecher, C Jungen, W Ubachs, F Merkt
The journal of chemical physics 132 (15), 154301, 2010
On a possible variation of the proton-to-electron mass ratio: H2 spectra in the line of sight of high-redshift quasars and in the laboratory
W Ubachs, R Buning, KSE Eikema, E Reinhold
Journal of molecular spectroscopy 241 (2), 155-179, 2007
Methanol as a sensitive probe for spatial and temporal variations of the proton-to-electron mass ratio
P Jansen, LH Xu, I Kleiner, W Ubachs, HL Bethlem
Physical Review Letters 106 (10), 100801, 2011
Prospects for precision measurements on ammonia molecules in a fountain
HL Bethlem, M Kajita, B Sartakov, G Meijer, W Ubachs
The European Physical Journal Special Topics 163 (1), 55-69, 2008
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