Ultrafast Laser Physics and Precision Metrology For Fundamental Tests

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Publications (not complete)

Over time more links to papers will be added and more pdf's. Before 2001 only some selected papers are listed

Science cover

Y. van de Werf, K. Steinebach, R. Jannin, H.L. Bethlem, K.S.E. Eikema,
Alpha and helion charge radius difference determined from quantum degenerate helium,
Science 388, 850-853 (2025)
https://www.science.org/doi/10.1126/science.adj2462

E.L. Grundeman, V. Barbe, Andres Martinez de Velasco, C. Roth, M. Collombon, J.J. Krauth, L.S. Dreissen, R. Taieb, K.S.E. Eikema
Laser excitation of the 1S-2S transition in singly-ionized helium
Communications Physics 7, 414 (2024)
https://www.nature.com/articles/s42005-024-01891-4

R. Jannin, Y. van der Werf, K. Steinebach, H.L. Bethlem, K.S.E. Eikema,
Pauli blocking of stimulated emission in a degenerate Fermi gas
Nature Communications 13, 6479 (2022)
https://www.nature.com/articles/s41467-022-34135-6

S. Patra, M. Germann, J.-Ph. Karr, M. Haidar, L. Hilico, V.I. Korobov, F.M.J. Cozijn, K.S.E. Eikema, W. Ubachs, J.C.J. Koelemeij
Proton-electron mass ratio from laser spectroscopy of HD+ at the part-per-trillion level
Science 369, 1238-1241 (2020)
https://science.sciencemag.org/content/369/6508/1238

L.S. Dreissen, C. Roth, E.L. Grundeman, J.J. Krauth, M.G.J. Favier, K.S.E. Eikema,
Ramsey-comb precision spectroscopy in xenon at vacuum ultraviolet wavelengths produced with high-order harmonic generation
Physical Review A 101, 052509 (2020)
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.101.052509
PDF

L. Loetgering, M. Du, K.S.E. Eikema, S. Witte,
zPie: an autofocusing algorithm for ptychography
Optics Letters 45, 2030-2033 (2020)
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-45-7-2030
PDF

M. Du, L. Loetgering, K.S.E. Eikema, S.Witte
Measuring laser beam quality, wavefronts, and lens aberations using ptychography
Optics Express 28, 5022-5034 (2020)
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-28-4-5022
PDF

A.C.C. de Beurs, X. Liu, G.S.M. Jansen, A.P. Konijnenberg, W.M.J. Coene, K.S.E. Eikema, S. Witte,
Extreme ultraviolet lensless imaging without object support through rotational diversity in diffractive shearing interferomtry
Optics Express 28, 5257-5266 (2020)
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-28-4-5257

L. Loetgering, M. Baluktsian, K. Keskinbora, R. Horstmeyer, T. Wilhein, G. Schultz, K.S.E. Eikema, S. Witte,
Generation and characterization of focused helical x-ray beams
Science Advances 6, eaax8836 (2020)
https://advances.sciencemag.org/content/6/7/eaax8836.abstract

J.J. Krauth, L.S. Dreissen, C. Roth, E.L. Grundeman, M. Collombon, M. Favier, K.S.E. Eikema
Paving the way for fundamental physics tests with singly-ionized helium
PoS volume 353 (FFK 2019)
PDF

M. Du, K.S.E. Eikema, S. Witte,
Computational-imaging-based optical coherence tomography in time- and frequency-domain
OSA Continuum 2, 3141-3152 (2019)
https://www.osapublishing.org/osac/abstract.cfm?uri=osac-2-11-3141

M. Beyer, N. Hoelsch, J. Hussels, C.-F. Cheng, E.J. Salumbides, K.S.E. Eikema, W. Ubachs, Ch. Jungen, and F. Merkt
Determination of the interval between the ground states of para- and ortho-H2
Phys. Rev. Lett. 123, 163002 (2019)
https://journals-aps-org.vu-nl.idm.oclc.org/prl/pdf/10.1103/PhysRevLett.123.163002
PDF

L.S. Dreissen, C. Roth, E.L. Gruendeman, J.J. Krauth, M. Favier and K.S.E. Eikema
High-precision Ramsey-Comb Spectroscopy Based on High-Harmonic Generation
Phys. Rev. Lett. 123, 143001 (2019)
https://journals-aps-org.vu-nl.idm.oclc.org/prl/pdf/10.1103/PhysRevLett.123.143001
PDF

R. Schupp, F. Torretti, R.A. Meijer, M. Bayraktar, J. Scheers, D. Kurilovich, A. Bayerle, K.S.E. Eikema, S. Witte, W. Ubachs, R. Hoekstra, O.O. Versolato,
Efficient Generation of Extreme Ultraviolet Light From Nd:YAG-Driven Microdroplet-Tin Plasma
Phys. Rev. Appl. 12, 014010 (2019)
https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.12.014010

G.S.M. Jansen, X. Liu, K.S.E. Eikema, S. Witte
Broadband extreme ultraviolet dispersion measurements using a high-harmonic source
Opt. Lett. 44, 3625-3628 (2019)
https://www-osapublishing-org.vu-nl.idm.oclc.org/ol/abstract.cfm?uri=ol-44-15-3625

N. Holsch, M. Beyer, E.J. Salumbides, K.S.E. Eikema, W. Ubachs, C. Jungen, F. Merkt
Benchmarking Theory with an Improved Measurement of the Ionization and Dissociation Energies of H2
Phys. Rev. Lett. 122, 103002 (2019)
https://journals-aps-org.vu-nl.idm.oclc.org/prl/pdf/10.1103/PhysRevLett.122.103002
PDF

D. Kurilovich, T.D. Pinto, F. Torretti, R. Schupp, J. Scheers, A.S. Stodolna, H. Gelderblom, K.S.E. Eikema, S. Witte, W. Ubachs, R. Hoekstra, O.O. Versolato,
Expansion Dynamics after Laser-Induced Cavitation in Liquid Tin Microdroplets
Phys. Rev. Appl. 10, 054005 (2018)
https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.10.054005

C-F Cheng, J. Hussels, M. Niu, H.L. Bethlem, K.S.E. Eikema, E.J. Salumbides, W. Ubachs, M. Beyer, N. Holsch, J.A. Agner, F. Merkt, T.G. Tao, S.M. Hu, C. Jungen,
Dissociation Energy of the Hydrogen Molecule at 10(-9) Accuracy
Phys. Rev. Lett. 121, 013001 (2018)
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.013001
PDF

R.J. Rengelink, Y. van der Werf, R.P.M.J.W. Notermans, R. Jannin, K.S.E. Eikema, M.D. Hoogerland, W. Vassen,
Precision spectroscopy of helium in a magnetic wavelength optical dipole trap
Nature Physics 14, 1132 (2018)
https://www.nature.com/articles/s41567-018-0242-5
PDF

A.S. Stodolna, T.D. Pinto, F. Ali, A. Bayerle, D. Kurilovich, J. Matthijsen, R. Hoekstra, O.O. Versolato, K.S.E. Eikema, S. Witte,
Controlling ion kinetic energy distributions in laser produced plasma sources by means of a picosecond pulse pair,
J. Appl. Phys. 124, 053303 (2018)

G.S.M. Jansen, A. de Beurs, X. Liu, K.S.E. Eikema, S. Witte,
Diffractive shear interferometry for extreme ultraviolet high-resolution lensless imaging
Opt. Expr. 26, 12479-12489 (2018)

F.M.J. Cozijn, P. Dupre, E.J. Salumbides, K.S.E. Eikema, W. Ubachs,
Sub-Doppler Frequency Metrology in HD for Tests of Fundamental Physics
Phys. Rev. Lett. 120, 153002 (2018)
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.153002

R.K. Altman, L.S. Dreissen, E.J. Salumbides, W. Ubachs and K.S.E. Eikema,
Deep-Ultraviolet Frequency Metrology of H2 for Tests of Molecular quantum Theory
Phys. Rev. Lett. 120, 043204 (2018)
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.043204
PDF

M.J. Deuzeman et al.,
Ion distribution and ablation depth measurements of a fs-ps laser irradiated solid tin target
J. Appl. Phys. 121, 103301 (2017)

J. Biesheuvel, J-P Karr, L. Hilico, K.S.E. Eikema, W. Ubachs, J.C.J. Koelemeij,
High-precision spectroscopy of the HD+ molecule at the 1-p.p.b level
Appl. Phys. B 123, 23 (2017)

S. Galtier, R.K. Altmann, L.S. Dreissen, K.S.E. Eikema,
High-accuracy deep-UV Ramsey-comb spectroscopy in krypton
Appl. Phys. B 123, 16 (2017)

R.K. Altmann, S. Galtier, L.S. Dreissen, and K.S.E. Eikema,
High-Precision Ramsey-Comb spectroscopy at Deep-Ultraviolet Wavelengths
Phys. Rev. Lett. 117, 173201 (2016)
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.173201
PDF

G.S.M. Jansen, D. Rudolf, L. Freissem, K.S.E. Eikema, and S. Witte,
Spatially resolved Fourier-transform Spectroscopy in the extreme ultraviolet
Optica 3, 1122 (2016)
https://www.osapublishing.org/optica/abstract.cfm?uri=optica-3-10-1122&origin=search

J. Biesheuvel, J-P Karr, L. Hilico, K.S.E. Eikema, W. Ubachs, J.C.J. Koelemeij,
Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD
Nat. Comm. 7, 10385 (2016)
https://www.nature.com/articles/ncomms10385

W. Ubachs, J.C.J. Koelemeij, K.S.E. Eikema, E.J. Salumbides,
Physics beyond the Standard Model from hydrogen spectroscopy
J. of Mol. Spec. 320, 1-12 (2016)
http://www.sciencedirect.com/science/article/pii/S0022285215300217

K.S.E. Eikema,
News and Views: Twisted high-harmonic generation
Nat. Photon. 9, 710-712 (2015)
http://www.nature.com/nphoton/journal/v9/n11/full/nphoton.2015.204.html

T.J. Pinkert, O. Boll, L. willmann, G.S.M. Jansen, E.A. Dijck, B.G.H.M. Groeneveld, R. Smets, F.C. Bosveld, W. Ubachs, K. Jungmann, K.S.E. Eikema, J.C.J. Koelemeij,
Effect of soil temperature on optical frequency transfer through unidirectional dense-wavelength-division-multiplexing fiber-optic links,
Appl. Opt. 54, 728-738 (2015),
https://www.osapublishing.org/ao/abstract.cfm?uri=ao-54-4-728

D.W.E. Noom, D.E. Boonzajer Flaes, E. Labordus, K.S.E. Eikema, S. Witte,
High-speed multi-wavelength Fresnel diffraction imaging
Opt. Expr. 22, 30504-30511 (2014)
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-22-25-30504

V.T. Tenner, K.S.E. Eikema, S. Witte,
Fourier transform holography with extended references using a coherent ultra-broadband light source
Opt. Expr. 22, 25397-25409 (2014)
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-22-21-25397

W. Ubachs, E.J. Salumbides, K.S.E. Eikema, N. de Oliveira, L. Nahon,
Novel techniques in VUV high-resolution spectroscopy
J. Electr. Spectr. Rel. Phen. 196, 159-164 (2014)

M.L. Niu, E.J. Salumbides, G.D. Dickenson, K.S.E. Eikema, W. Ubachs,
Precision spectroscopy of the X-1 Sigma(+)(g), v=0 -> 1(J=0-2) rovibrational splittings in H-2, HD and D-2
J. Mol. Spectr. 300, 44-54 (2014)
http://www.sciencedirect.com/science/article/pii/S0022285214000630

J. Morgenweg and K.S.E. Eikema
Ramsey-comb spectroscopy: Theory and signal analysis
Phys. Rev. A 89, 052510 (2014)
http://dx.doi.org/10.1103/PhysRevA.89.052510
PDF

Front page Light: Science and
Applications

S. Witte, V.T. Tenner, D.W.E. Noom, K.S.E. Eikema
Lensless diffractive imaging with Ultra-broadband table-top sources: from infrared to extreme ultraviolet wavelengths
Light: Science and Applications 3, 1-7 (2014)
http://www.nature.com/lsa/journal/v3/n3/pdf/lsa201444a.pdf
PDF

Front cover of Nature Physics January
2014

J. Morgenweg, I. Barmes and K.S.E. Eikema,
Ramsey-comb spectroscopy with intense ultrashort laser pulses
Nature Physics 10, 30-33 (2014)
http://www.nature.com/nphys/journal/v10/n1/full/nphys2807.html
PDF

Also see the News and Views by Scott A. Diddams on page 8-9 of the same issue:
http://www.nature.com/nphys/journal/v10/n1/full/nphys2852.html
PDF

F

D.W.E. Noom, K.S.E. Eikema and S.Witte
Lensless phase contrast microscopy based on multi-wavelength Fresnel diffraction
Optics Letters 39, 193-196 (2014)

D.W.E. Noom, S. Witte, J. Morgenweg, R. Altmann, K.S.E. Eikema,
High energy, high repetition rate picosecond pulses from a Quasi-CW diode pumped Nd:YAG system.
Optics Letters 38, 3021-3023 (2013)

I. Barmes, S. Witte, K.S.E. Eikema
High-precision spectroscopy with counter-propagating femtosecond pulses.
Phys. Rev. Lett. 111, 023007 (2013)

E.J. Salumbides, J.C.J. Koelemeij, J. Komasa, K. Pachucki, K.S.E. Eikema, W. Ubachs,
Bounds on fith fources from precision measurements on molecules.
Physical Review D 87, 112008 (2013)
http://dx.doi.org/10.1103/PhysRevD.87.112008

I. Barmes, S. Witte, K.S.E. Eikema,
Spatial and spectral coherent control with frequency combs
Nature Photonics 7, 38-42 (2013)
http://www.nature.com/nphoton/journal/v7/n1/pdf/nphoton.2012.299.pdf

Also see the New and Views article by A.M. Weiner on page 6-8 of the same issue:
http://www.nature.com/nphoton/journal/v7/n1/pdf/nphoton.2012.334.pdf

G.D. Dickenson, M.L. Niu, E.J. Salumbides, J. Komasa, K.S.E. Eikema, K. Pachucki, W. Ubachs
Fundamental Vibration of Molecular Hydrogen
Phys. Rev. Lett. 110, 193601 (2013)

J. Morgenweg, K.S.E. Eikema
Multi-delay, phase coherent pulse pair generation for precision Ramsey-frequency comb spectroscopy
Optics Express 21, 5275-5286 (2013)

T.J. Pinkert, E.J. Salumbides, M.S. Tahvilli, W. Ubachs, E.A.J.M. Bente, K.S.E. Eikema,
Frequency comb generation by CW laser injection into a quantum-dot mode-locked laser
Optics Express 20, 21357-21371 (2012)

J. Morgenweg, K.S.E. Eikema,
A 1.8 mJ, picosecond Nd:YVO4 bounce amplifier pump front-end for high-accuracy XUV-frequency comb spectroscopy
Laser Physics Letters 9, 781-785 (2012)

C. Benko, A. Ruehl, M.J. Martin, K.S.E. Eikema, M.E. Fermann, I. Hartl, J. Ye,
Full phase stabilisation of a Yb:fiber femtosecond frequency comb via high-bandwidth transducers
Opt. Lett. 37, 2196-2198 (2012)

A. Ruehl, A. Gambetta, H. Ingmar, M.E. Fermann, K.S.E. Eikema, M. Marangoni,
Widely-tunable mid-infrared frequency comb source based on difference frequency generation
Opt. Lett. 37, 2232-2234 (2012)

J. Morgenweg, K.S.E. Eikema,
Tailored pulse sequences from an 880 nm pumped Nd:YVO4 bounce amplifier
Opt. Lett. 37, 208-210 (2012)

S. Witte, K.S.E. Eikema,
Ultrafast Optical Parametric Chirped-Pulse Amplification
Invited, IEEE Journal of Selected Topics in Quantum Electronics 18, 296-307 (2012)

D.Z. Kandula, C. Gohle, T.J. Pinkert, W. Ubachs, K.S.E. Eikema,
XUV frequency-comb metrology on he ground state of helium
Phys. Rev. A 84, 062512 (2011)

A.J. de Nijs, E.J. Salumbides, K.S.E. Eikema, W. Ubachs, H.L. Bethlem,
UV-frequency metrology on CO a 3Π: isotope effects and sensitivity to a variation of the proton-to-electron mass ratio
Phys. Rev. A 84, 052509 (2011)
http://dx.doi.org/10.1103/PhysRevA.84.052509

R. van Rooij, J.S. Borbely, J. Simonet, M.D. Hogerland, K.S.E. Eikema, R.A. Rozendaal, W. Vassen,
Frequency metrology in quantum degenerate helium: direct measurement of the 2 3S1 - 2 1S0 transition
Science 333, 196-198 (2011)

T.J. Pinkert, D.Z. Kandula, C. Gohle, I. Barmes, J. Morgenweg, K.S.E. Eikema,
Widely tunable XUV frequency comb generation
Opt. Lett. 36, 2026-2028 (2011)

K.S.E. Eikema,
Frequency Combs liberated from material dispersion
Nature Photonics 5, 258-260 (2011) (News and Views)
http://www.nature.com/nphoton/journal/v5/n5/full/nphoton.2011.70.html?WT.ec_id=NPHOTON-201105

E.J. Salumbides, V. Maslinskas, I.M. Dildar, A.L. Wolf, E.J. van Duijn, K.S.E. Eikema, W. Ubachs,
High precision frequency measurement of the 423 nm Ca I line
Phys. Rev. A 83, 012502 (2011).
http://dx.doi.org/10.1103/PhysRevA.83.012502

A.L. Wolf, J. Morgenweg, J.C.J. Koelemeij, S.A. van den Berg, W. Ubachs, K.S.E. Eikema (2011).
Direct frequency-comb spectroscopy of a dipole-forbidden clock transition in trapped 40Ca+ ions
Opt. Lett., 36, 49-51 (2011)

D.Z. Kandula, C. Gohle, T.J. Pinkert, W. Ubachs, K.S.E. Eikema,
Extreme Ultraviolet Frequency Comb Metrology,
Phys. Rev. Lett. 105, 063001 (2010), see also the Physics Synopsys, and Nature Research Highlight

K.S.E. Eikema, W. Ubachs
Precision Laser spectroscopy in the Extreme Ultraviolet
Handbook of high resolution spectroscopy
Eds. M. Quack and F. Merkt John Wiley & Sons, 2010, ISBN: 978-0-470-06653-9

M.J.R. Heck, A. E.J. Salumbides, Renault, E.A.J.A. Bente, Y.S. Oei, M.K. Smit, K.S.E. Eikema, R. van Veldhoven, R. Notzel, K.S.E. Eikema, W. Ubachs,
Analysis of hybrid mode-locking of two-section quantum dot lasers operating at 1.5 mu m,
Op. Expr. 17, 18063 (2009)

A.L. Wolf, S.A. van den Berg, W. Ubachs, K.S.E. Eikema,
Direct Frequency Comb Spectroscopy of Trapped Ions
Phys. Rev. Lett. 102, 223901 (2009)

M.J.R. Heck, A. Renault, E.A.J.A. Bente, Y.S. Oei, M.K. Smit, K.S.E. Eikema, W. Ubachs, S. Anantathanasarn, R. Notzel,
Passively Mode-Locked 4.6 and 10.5 GHz Quantum Dot Laser Diodes Around 1.55 mu m With Large Operating Regime
IEEE. J. Sel. Top. Quant. El. 15, 634 (2009)

J.J. Liu, E.J. Salumbides, U. Hollenstein, J.C.J. Koelemaij, K.S.E. Eikema, W. Ubachs, F. Merkt
Determination of the ionization and dissociation energies of the hydrogen molecule
J. Chem. Phys. 130, 174306 (2009)

E.J. Salumbides, D. Bailly, A. Khramov, A.L. Wolf, K.S.E. Eikema, M. Vervloet, W. Ubachs
Improved Laboratory Values of the H-2 Lyman and Werner Lines for Constraining Time Variation of the Proton-to-Electron Mass Ratio
Phys. Rev. Lett. 101, 223001 (2008)

A.L. Wolf, S.A. van den Berg, Ch. Gohle, E.J. Salumbides, W. Ubachs, K.S.E. Eikema,
Frequency metrology on the 4s 2S1/2 - 4p 2P1/2 transition in 40Ca+ for comparison with quasar data
Phys. Rev. A. 78, 032511 (2008)

D.Z. Kandula, A. Renault, Ch. Gohle, A.L. Wolf, S. Witte, W. Hogervorst, W. Ubachs, K.S.E. Eikema,
Ultrafast double-pulse parametric amplification for precision Ramsey metrology
Opt. Express 16, 7071-7082 (2008)

E.J. Salumbides, D. Bailly, A. Khramov, A.L. Wolf, K.S.E. Eikema, M. Vervloet, W. Ubachs,
Improved laboratory values of the H2 Lyman and Werner lines for constraining time variation of the proton-to-electron mass ratio
Phys. Rev. Lett. 101, 223001 (2008)
http://dx.doi.org/10.1103/PhysRevLett.101.223001

E.J. Salumbides, K.S.E. Eikema, W. Ubachs, U. Hollenstein, H. Knoeckel, E. Tiemann,
Improved potentials and Born-Oppenheimer corrections by new measurements of transitions of 129I2 and 127I129I in the B3Pu - X1Sg band system
Eur. Phys. Journ. D 47, 171-179 (2008)

A. Renault, D.Z. Kandula, S. Witte, A.L. Wolf, R. Th. Zinkstok, W. Hogervorst, K.S.E. Eikema,
Phase stability of teraWatt-class ultrabroadband parametric amplification
Opt. Lett. 32, 2363-2365 (2007)

S. Witte,R. Th. Zinkstok, W. Hogervorst, K.S.E. Eikema,
Numerical simulations for performance optimization of a few-cycle terawatt NOPCPA system
Appl. Phys. B. 87, 677-684 (2007)

W. Ubachs, R. Buning, K.S.E. Eikema, E. Reinhold,
On a possible variation of the proton-electron mass ratio; H2 spectra in the line of sight of high-redshift quasars and in the laboratory
J. Mol. Spectr. 241, 155-179 (2007)

S. Hannemann, E.J. Salumbides, S. Witte, R. Zinkstok, E.-J. van Duijn, K.S.E. Eikema, W. Ubachs,
Frequency metrology on the EF1S+g- X1S+g transition in H2, HD and D2
Phys. Rev. A 74, 062514 (2006)

E.J. Salumbides, S. Hannemann, K.S.E. Eikema, W. Ubachs,
Isotopically-resolved calibration of the 285-nm Mg I resonance line for comparison with quasar absorptions
Mon. Notices Roy. Astron. Soc. 373 (2006) L41-L44

S. Witte, R. Th. Zinkstok, A.L. Wolf, W. Hogervorst, W. Ubachs, K.S.E. Eikema,
A source of 2 terawatt, 2.7 cycle laser pulses based on noncollinear optical parametric chirped amplification
Opt. Express 14, 8168-8177 (2006)

S. Hannemann, E.J. Salumbides, S. Witte, R. Zinkstok, E.-J. van Duijn, K.S.E. Eikema, W. Ubachs,
Frequency metrology on the Mg 3s2 - 3s4p line for comparison with quasar data
Phys. Rev. A 74, 012505 (2006).

Frequency comb spectroscopy in the vacuum ultraviolet region
R.Th. Zinkstok, S. Witte, W. Hogervorst, W. Ubachs, K.S.E. Eikema,
Phys. Rev. A, Rapid Comm. 73, 061801(R) (2006)

E.J. Salumbides, K.S.E. Eikema, W. Ubachs, U. Hollenstein, H. Knoeckel, E. Tiemann,
The hyperfine structure of 129I2 and 127I129I in the B3Pu - X1Sg band system
Mol. Phys. 104, 2641-2652 (2006)

Generation of few-cycle terawatt light pulses using optical parametric chirped pulse amplification
S. Witte, R. Th. Zinkstok, W. Hogervorst, K.S.E. Eikema
Optics Express 13,4903-4908 (2005)

Generation of continuous coherent Lyman-alpha and 1S-2P spectroscopy of atomic hydrogen
A. Pahl, P. Fendel, B.R. Heinrich, K.S.E. Eikema, J. Walz, T.W. Haensch,
Laser Physics 15, 46-54, 2005

Deep ultraviolet quantum-interference metrology with ultrashort laser pulses
S. Witte, R.Th. Zinkstok, W. Ubachs, W. Hogervorst, K.S.E. Eikema
Science 307, 400-403 (2005) and see also the Perspective by T. Udem in the same issue of Science

High-power parametric amplification of 11.8 fs laser pulses with carier-envelope phase control
R.Th. Zinkstok, S. Witte, W. Hogervorst, K.S.E. Eikema,
Opt. Lett. 30,78-80 (2005)

Control and precise measurement of carrier-envelope phase dynamics
S. Witte, R. Th. Zinkstok, W. Hogervorst, K.S.E. Eikema
Applied Physics B 78, 5-12 (2004)

Continuous coherent Lyman-alpha excitation of atomic hydrogen
K.S.E. Eikema, J. W. Walz, T.W. Haensch
Physical Review Letters 86, 5679-5682 (2001)

Continuous wave coherent Lyman-alpha radiation
K.S.E. Eikema, J. W. Walz, T.W. Haensch
Physical Review Letters 83, 3828-3831 (1999)
http://dx.doi.org/10.1103/PhysRevLett.83.3828

Lamb shift measurement in the 1 S-1 ground state of helium
K.S.E. Eikema, W. Ubachs, W. Vassen, W. Hogervorst
Physical Review A 55, 1866-1884 (1997)

Precision measurements in helium at 58 nm: Ground state Lamb shift and the 1 S-1 2 P-1 transition isotope shift
K.S.E. Eikema, W. Ubachs, W. Vassen, W. Hogervorst
Physical Review Letters 76, 1216-1219 (1996)
http://dx.doi.org/10.1103/PhysRevLett.76.1216

1st laser excitation of the He-4 1(1)S-2(1)P resonance line at 58 nm
K.S.E. Eikema, W. Ubachs, W. Vassen, W. Hogervorst
Physical Review Letters 71, 1690-1692 (1993)
http://dx.doi.org/10.1103/PhysRevLett.71.1690

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Questions? Contact: k.s.e.eikema@vu.nl