People
The Ultrafast Laser Physics
and Precision Metrology Group is headed by prof. dr. K.S.E.
Eikema. The group is a
subdivision of the Quantum Metrology and Laser
Applications group which
is also headed by him since November 2022
(and previously by prof. dr. W.
Ubachs, who is still
active). A picture of the total group a few years ago in
front of the Maritime Museum is shown below.

The total combined group in
front of the National Maritime Museum Amsterdam in 2018
Current PhD students and postdocs
& master students in the group of K.S.E. Eikema:
PhD students:
Charlaine Roth
Elmer Grundeman
Andres Martinez de Velasco
Yuri van der Werf
Kees Steinebach
Postdocs:
Vincent Barbe
For the members in the combined
group of Stefan Witte and Kjeld Eikema at ARCNL, see
the
ARCNL
EUV Generation and Imaging group (and also see below).
Current collaborators:
Dr. Stefan Witte Group leader of at ARCNL of the
EUV
Generation and Imaging Group.
Prof. dr. Wim Ubachs, dr. Edcel
Salumbides and prof. dr. Rick Bethlem on the theme of
precision spectroscopy in molecules, and testing the
constancy of fundamental constants.
Prof. dr. Rick Bethlem, on two meta-stable helium projects
(determination of alpha, and charge radius difference 4He
and 3He).
Dr. Jeroen Koelemeij on
the theme HD+ spectroscopy and time and frequency
dissemination over fiber links.
Prof. dr. Frederic Merkt and
co-workers from the ETH Zurich, on the theme of precision
spectroscopy in molecules (H2).
Former group members and thesis:
Former PhD students:
Dr. Laura Dreissen: thesis in
2020
Dr. Matthijs Jansen: thesis in
2020
Dr. Robert Altmann: thesis in
2018
Dr. Itan Barmes: thesis in
2017
Dr.
Daniel Noom: thesis in
2016
Dr. Tjeerd Pinkert: thesis
in 2015
Dr. Jonas Morgenweg: thesis in
2014
Dr. Dominik Z. Kandula: thesis
in 2011
Dr. Anne Lisa
Wolf: thesis
in 2011
Dr. Roel Zinkstok: thesis in
2008
Dr. Stefan Witte: thesis
in 2007
Former Postdocs:
Dr. Julian Krauth (still
partly involved in the He+ project)
Dr. Mathieu Collombon
(still partly involved in the He+ project)
Dr. Raphael Jannin (still partly involved in the He*
project)
Dr. Maxime Favier (still partly involved in the
He+ project)
Dr.
Denis Rudolf
Dr. Sandrine Galtier
Dr. Axel Ruehl
Dr. Christoph Gohle
Dr. Amandine
Renault
Former collaborators:
Dr. Wim Vassen and co-workers
on the theme of precision spectroscopy in metastable
helium.
Prof. dr. Arie den Boef, ASML Eindhoven and VU Amsterdam,
on continuum generation and computational imaging
Dr. Ronald Holzwarth and
co-workers of Menlo Systems GmbH, on the theme of control
electronics and (frequency comb) lasers.
Dr. Erwin Bente and co-workers
of the TU Eindhoven, on the theme of quantum-dot based
modelocked lasers.
Prof. Marco Marangoni and
co-workers from the Politecnico di Milano, Italy, on the
theme of frequency comb generation in the mid-infrared.
Dr. I. Hartl and dr. M.E.
Fermann from IMRA (USA) on Yb-fiber lasers and
mid-infrared comb generation.
Dr. S.A. van den Berg and
co-workers, VSL (Netherlands), on ion traps and frequency
comb laser excitation
We gratefully acknowledge
financial support from the following organizations:
Questions? Contact: k.s.e.eikema@vu.nl
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