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  • W.M.G. Ubachs

XUV frequency comb spectroscopy

Gohle, C., Kandula, D. Z., Pinkert, T. J., Ubachs, W. M. G. & Eikema, K. S. E., 2010, Proceedings of the XIX International Conference on Laser Spectroscopy. Katori, H., Nakagawa, K. & Yoneda, H. (eds.). World Scientific, p. 171-180

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

File

XUV frequency comb spectroscopy

Gohle, C., Kandula, D. Z., Pinkert, T. J., Ubachs, W. & Eikema, K. S. E., 2010, International Conference on Ultrafast Phenomena, UP 2010.

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

XUV frequency comb metrology on the ground state of helium

Kandula, D. Z., Gohle, C., Pinkert, T. J., Ubachs, W. M. G. & Eikema, K. S. E., 2011, In : Physical Review A. 84, 6, 062512.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Widely tunable laser frequency offset lock with 30 GHz range and 5 THz offset

Biesheuvel, J., Noom, D. W. E., Salumbides, E. J., Sheridan, K. T., Ubachs, W. M. G. & Koelemeij, J. C. J., 2013, In : Optics Express. 21, 12, p. 14008-14016

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Widely tunable extreme ultraviolet frequency comb generation

Pinkert, T. J., Kandula, D. Z., Gohle, C., Morgenweg, J., Barmes, I., Ubachs, W. & Eikema, K. S. E., 2011, 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011. 5943518

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

VUV spectroscopic study of the D1Piu state of molecular deuterium

Dickenson, G. D., Ivanov, T. I., Ubachs, W. M. G., Roudjane, M., de Oliveira, N., Joyeux, D., Nahon, L., Tchang-Brillet, W. U. L., Glass-Maujean, M., Schmoranzer, H., Knie, H., Kubler, S. & Ehresmann, A., 2011, In : Molecular Physics. 109, 22, p. 2396-2708

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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VUV spectroscopic study of the B '' (B)over-bar(1) Sigma(+)(u) state of H-2

Dickenson, G. D. & Ubachs, W. M. G., 2014, In : Molecular Physics. 112, 8, p. 1089-1093

Research output: Contribution to JournalArticleAcademicpeer-review

VUV Fourier-transform absorption study of the Lyman and Werner bands in D-2

de Lange, A., Dickenson, G. D., Salumbides, E. J., Ubachs, W. M. G., de Oliveira, N., Joyeux, D. & Nahon, L., 2012, In : Journal of Chemical Physics. 136, 23

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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VIS and VUV spectroscopy of (CO)-C-12-O-17 and deperturbation analysis of the A(1)II, nu=1-5 levels

Hakalla, R., Niu, M., Field, R. W., Salumbides, E. J., Heays, A. N., Stark, G., Lyons, J. R., Eidelsberg, M., Lemaire, J. L., Federman, S., Zachwieja, M., Szajna, W., Kolek, P., Piotrowska, I., Ostrowska-Kopec, M., Kepa, R., de Oliveira, N. & Ubachs, W. M. G., 2016, In : RSC Advances. 6, 38, p. 31588-31606

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

UV frequency metrology on CO (a3P); Isotope effects and sensitivity to a variation of the proton-to-elelctron mass ratio

de Nijs, A. J., Salumbides, E. J., Eikema, K. S. E., Ubachs, W. M. G. & Bethlem, H. L., 2011, In : Physical Review A. 84, 12 p., 052509.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Towards measuring the ionisation and dissociation energies of molecular hydrogen with sub-MHz accuracy

Sprecher, D., Jungen, C., Ubachs, W. M. G. & Merkt, F., 2011, In : Faraday Discussions. 150, p. 51-70

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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The spin-forbidden vacuum-ultraviolet absorption spectrum of 14N15N

Heays, A. N., Lewis, B. R., De Oliveira, N. & Ubachs, W., 14 Dec 2019, In : Journal of Chemical Physics. 151, 22, p. 1-13 13 p., 224305.

Research output: Contribution to JournalArticleAcademicpeer-review

The Pancharatnam-Berry phase for non-cyclic polarization changes

van Dijk, T., Schouten, H. F., Ubachs, W. M. G. & Visser, T. D., 2010, In : Optics Express. 18, 10, p. 10796-10804 9 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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The pancharatnam-berry phase for non-cyclic polarization changes

Van Dijk, T., Schouten, H. F., Ubachs, W. & Visser, T. D., 2011, Frontiers in Optics, FiO 2011.

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

The Measurement of Tropospheric Temperature Profiles using Rayleigh-Brillouin Scattering: Results from Laboratory and Atmospheric Studies

Witschas, B., Reitebuch, O., Lemmerz, C., Kableka, P. G., Kondratyev, S., Gu, Z. & Ubachs, W., 7 Jun 2016, In : EPJ Web of Conferences. 119, 27004.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

The H2 molecule; test of QED and varying constants

Ubachs, W., 2013, Laser Science, LS 2013. Optical Society of America

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

The excited J=0 (1)Sigma(+)(u) levels of D-2: Measurements and ab initio quantum defect study

Glass-Maujean, M., Jungen, C., Dickenson, G. D., de Oliveira, N. & Ubachs, W. M. G., 2016, In : Journal of Molecular Spectroscopy. 320, p. 33-38

Research output: Contribution to JournalArticleAcademicpeer-review

The electronic spectrum of the Cs-C11H3 radical

Zhao, D., Linnartz, H. V. J. & Ubachs, W. M. G., 2012, In : Journal of Chemical Physics. 136, 5, p. 054307

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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The D-1 Pi(u) state of HD and the mass scaling relation of its predissociation widths

Dickenson, G. D. & Ubachs, W. M. G., 2012, In : Journal of Physics B: Atomic, Molecular and Optical Physics. 45, 14

Research output: Contribution to JournalArticleAcademicpeer-review

The 4051 Å comet band of 13C3

Haddad, M. A., Zhao, D., Linnartz, H. & Ubachs, W., Feb 2014, In : Proceedings of the International Astronomical Union. 9, S297, p. 297-299 3 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Tests of fundamental physics using Ramsey-comb spectroscopy on the hydrogen molecule

Roth, C., Dreissen, L. S., Gründeman, E. L., Krauth, J. J., Favier, M., Salumbides, E. J., Ubachs, W. & Eikema, K. S. E., 1 Jan 2019, European Quantum Electronics Conference, EQEC_2019. OSA - The Optical Society, 2019-ed_2_1. (Optics InfoBase Conference Papers; vol. Part F143-EQEC 2019).

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Tests of fundamental physics using ramsey-comb spectroscopy on the hydrogen molecule

Roth, C., Dreissen, L. S., Grundeman, E. L., Krauth, J. J., Favier, M., Salumbides, E. J., Ubachs, W. & Eikema, K. S. E., 17 Oct 2019, 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019. Institute of Electrical and Electronics Engineers Inc., 8872740. (2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019).

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498

Dapra, M., Henkel, C., Levshakov, S. A., Menten, K. M., Muller, S., Bethlem, H. L., Leurini, S., Lapinov, A. V. & Ubachs, W., Dec 2017, In : Monthly Notices of the Royal Astronomical Society. 472, 4, p. 4434-4443 10 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Testing the time-invariance of fundamental constants using cold and not-so-cold molecules

Bethlem, H. L., Jansen, P. & Ubachs, W., 2012, International Conference of Computational Methods in Sciences and Engineering 2009, ICCMSE 2009. Vol. 1504. p. 454-457 4 p.

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Testing the mass-scaling relations in the a3P state of 12C18O and 13C16O

de Nijs, A. J., Zhao, D., Bethlem, H. L., Linnartz, H. V. J. & Ubachs, W. M. G., 2013, In : Journal of Molecular Spectroscopy. 292, p. 20-22

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Temperature retrieval from Rayleigh-Brillouin scattering profiles measured in air

Witschas, B. & Ubachs, W. M. G., 2014, In : Optics Express. 22, 24, p. 29655-29667

Research output: Contribution to JournalArticleAcademicpeer-review

Temperature-dependent bulk viscosity of nitrogen gas determined from spontaneous Rayleigh-Brillouin scattering

Gu, Z. & Ubachs, W. M. G., 2013, In : Optics Letters. 38, 7, p. 1110-2

Research output: Contribution to JournalArticleAcademicpeer-review

Synchrotron vacuum ultraviolet radiation studies of the D 1Πu state of H2

Dickenson, G. D., Ivanov, T. I., Roudjane, M., de Oliveira, N., Joyeux, D., Nahon, L., Tchang-Brillet, W. Ü. L., Glass-Maujean, M., Haas, I., Ehresmann, A. & Ubachs, W., 14 Oct 2010, In : Journal of Chemical Physics. 133, 14, 144317.

Research output: Contribution to JournalArticleAcademicpeer-review

Synchrotron vacuum ultraviolet radiation studies of the D(1)Pi(u) state of H(2)

Dickenson, G. D., Ivanov, T. I., Roudjane, M., de Oliveira, N., Joyeux, D., Nahon, L., Tchang-Brillet, W. U. L., Glass-Maujean, M., Haar, I., Ehresmann, A. & Ubachs, W. M. G., 2010, In : Journal of Chemical Physics. 133, 14, p. 144317 10 p.

Research output: Contribution to JournalErratumAcademic

Open Access
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Structure determination of the non-linear hydrocarbon chains C9H3 and C11H3 by deuterium labeling

Zhao, D., Haddad, M. A., Linnartz, H. V. J. & Ubachs, W. M. G., 2011, In : Journal of Chemical Physics. 135, p. 074201 074201.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Spontaneous Rayleigh-Brillouin scattering of ultraviolet light in nitrogen, dry and moist air

Witschas, B., Vieitez, M. O., van Duijn, E-J., Reitebuch, O., Van de Water, W. & Ubachs, W. M. G., 2010, In : Applied Optics. 49, 22, p. 4217-4227 11 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Spin-orbit Splitting and Lifetime Broadening in the A(2)Delta Electronic State of l-C5H

Haddad, M. A., Zhao, D., Linnartz, H. V. J. & Ubachs, W. M. G., 2012, In : Chinese Journal of Chemical Physics. 25, 2, p. 129-134

Research output: Contribution to JournalArticleAcademicpeer-review

Spectroscopy and perturbation analysis of the CO A(1)pi -X-1 sigma(+) (2,0), (3,0) and (4,0) bands

Niu, M., Salumbides, E. J., Heays, A. N., de Oliveira, N., Field, R. W. & Ubachs, W. M. G., 2016, In : Molecular Physics. 114, 5, p. 627-636

Research output: Contribution to JournalArticleAcademicpeer-review

Spectroscopy and perturbation analysis of the A1π (v=0) state of 13 C16 O

Niu, M. L., Hakalla, R., Trivikram, T. M., Heays, A. N., de Oliveira, N., Salumbides, E. J. & Ubachs, W., 1 Oct 2016, In : Molecular Physics. 114, 19, p. 2857-2867 11 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

Spectroscopic Survey of Electronic Transitions of C6H, (C6H)-C-13, and C6D

Bacalla, X. L., Salumbides, E. J., Linnartz, H. V. J., Ubachs, W. M. G. & Zhao, D., 2016, In : Journal of Physical Chemistry A. 120, 32, p. 6402-6417

Research output: Contribution to JournalArticleAcademicpeer-review

Spectral identification of diffuse resonances in H2 above the n=2 dissociation limit

Ivanov, T. I., de Lange, C. A. & Ubachs, W. M. G., 2011, In : Journal of Chemical Physics. 134, p. 054309 10 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Sensitivity to a possible variation of the proton-to-electron mass ratio torsion-wagging-rotation transitions in methylamine CH3NH2

Ilyushin, V. V., Jansen, P., Kozlov, M. G., Levshakov, S. G., Kleiner, I., Ubachs, W. M. G. & Bethlem, H. L., 2012, In : Physical Review A. 85, 3, 032505.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Sensitivity of transitions in internal rotor molecules to a possible variation of the proton-to-electron mass ratio

Jansen, P., Kleiner, I., Xu, L-H., Ubachs, W. M. G. & Bethlem, H. L., 2011, In : Physical Review A. 84, 6, 06250584.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Sensitivity of rotational transitions in CH and CD to a possible variation of fundamental constants

de Nijs, A. J., Ubachs, W. M. G. & Bethlem, H. L., 2012, In : Physical Review A. 86, 3

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Search for cosmological μ-variation from high-redshift H2 absorption; a status report

Ubachs, W., Bagdonaite, J., Murphy, M. T., Buning, R. & Kaper, L., 2011, From Varying Couplings to Fundamental Physics - Proceedings of Symposium 1 of JENAM 2010. Kluwer Academic Publishers., p. 125-137 13 p.

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Search for cosmological mu variation form high-redshift H2 absorption; a status report

Ubachs, W. M. G., Bagdonaite, J., Murphy, M. T., Buning, R. & Kaper, L., 2011, From Varying Couplings to Fundamental Physics. Martins, C. & Molaro, P. (eds.). Berlin-Heidelberg: Springer, p. 125 (Astrophysics and Space Science Proceedings).

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

File

Rotationally resolved spectra of the 4051 angstrom comet band of C-3 for all six C-12 and C-13 isotopologues

Haddad, M. A., Zhao, D., Linnartz, H. V. J. & Ubachs, W. M. G., 2014, In : Journal of Molecular Spectroscopy. 297, p. 41-50

Research output: Contribution to JournalArticleAcademicpeer-review

Rotationally resolved A3Su-- X3Su- spectrum of HC7H

Wehres, N., Zhao, D., Ubachs, W. M. G. & Linnartz, H. V. J., 2010, In : Chemical Physics Letters. 497, p. 30-32

Research output: Contribution to JournalArticleAcademicpeer-review

Robust Constraint on a Drifting Proton-to-Electron Mass Ratio at z=0: 89 from Methanol Observation at Three Radio Telescopes

Bagdonaite, J., Dapra, M., Jansen, P., Bethlem, H. L., Ubachs, W. M. G., Muller, S., Henkel, C. & Menten, K. M., 2013, In : Physical Review Letters. 111, 23, 231101.

Research output: Contribution to JournalArticleAcademicpeer-review

Rayleigh-Brillouin scattering profiles of air at different temperatures and pressures

Gu, Z., Witschas, B., van der Water, W. & Ubachs, W. M. G., 2013, In : Applied Optics. 52, 19, p. 4640-51

Research output: Contribution to JournalArticleAcademicpeer-review

Rayleigh-Brillouin scattering of carbon dioxide

Gu, Z., Ubachs, W. M. G. & van der Water, W., 2014, In : Optics Letters. 39, 11, p. 3301-3304

Research output: Contribution to JournalArticleAcademicpeer-review

Rayleigh-Brillouin scattering in SF6 in the kinetic regime

Wang, Y., Yu, Y., Liang, K., Marques, W., van de Water, W. & Ubachs, W., 1 Feb 2017, In : Chemical Physics Letters. 669, p. 137-142 6 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Rayleigh-Brillouin light scattering spectra of CO2 from molecular dynamics

Jamali, S. H., De Groen, M., Moultos, O. A., Hartkamp, R., Vlugt, T. J. H., Ubachs, W. & Van De Water, W., 14 Aug 2019, In : Journal of Chemical Physics. 151, 6, p. 1-8 8 p., 064201.

Research output: Contribution to JournalArticleAcademicpeer-review

Ramsey-type microwave spectroscopy on CO (alpha(3) II)

de Nijs, A. J., Ubachs, W. M. G. & Bethlem, H. L., 2014, In : Journal of Molecular Spectroscopy. 300, SI, p. 79-85

Research output: Contribution to JournalArticleAcademicpeer-review

Radiation transport and scaling of optical depth in Nd:YAG laser-produced microdroplet-tin plasma

Schupp, R., Torretti, F., Meijer, R. A., Bayraktar, M., Sheil, J., Scheers, J., Kurilovich, D., Bayerle, A., Schafgans, A. A., Purvis, M., Eikema, K. S. E., Witte, S., Ubachs, W., Hoekstra, R. & Versolato, O. O., 19 Sep 2019, In : Applied Physics Letters. 115, 12, p. 1-5 5 p., 124101.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access