Alumni

Many of our former group members found interesting job opportunities in industry and even started many different companies because their knowhow in ultrafast lasers, semiconductor photonics and measurement techniques are important for many different industrial applications.

Also check out the ULP-Alumni association on external pagewww.ulp-alumni.ch.

Professors and leadership positions at Universities or National Research Labs


Ajanta Barh
(postdoc Keller group May 2019 - April 2023): Associate professor, Technical University of Denmark, receiving an excellence grant, external pageDFF-Sapere Aude 2022, from Denmark’s Frie Forskningsfond 
B. Özgür Alaydin (postdoc Keller group 2019-2021): Ass. Prof. at Sivas Cumhuriyet University, Nanophotonic Application and Research Center, Turkey
Laura Cattaneo
(postdoc Keller group 2014-2020): Max Plank Research Group Leader position (W2) at the MPI in Heidelberg May 2020
Matteo Lucchini
(postdoc Keller group 2012-2017): Ass. Prof. at Politecnico di Milano
Oliver Heckl (PhD Keller group 2011): Head of Christian Doppler Laboratory for Mid-IR Spectroscopy and Semiconductor Optics, University of Vienna, since 2017
Clara Saraceno
 (Ph.D. Keller group 2012, postdoc 2013-2016): Sofja Kovalevskaja Award from the German Alexander von Humboldt Foundation 2015 (five year fellowship for independent young researchers); W2 tenure track Assistent Professor, Ruhr-Universität Bochum, Germany, since June 2016 
Alexandra Landsman (postdoc Keller group 2010-2014): group leader at the Max Planck Institute for the Physics of Complex Systems, Dresden; and adjunct professor at POSTECH in Korea, 2014-2019, Associate Professor at Ohio State University (OSU), USA, since 2019
Rachel Grange (Ph.D. Keller group 2006): SNF ass. Professor 2014, ERC starting grant 2016, tenure-track Assistant Professor ETH Zürich since 2019
Adrian Pfeiffer (Ph.D. Keller group 2011): Junior-Professor, Friedrich Schiller University Jena, since 2013
Thomas Südmeyer (Ph.D. Keller group 2003, postdoc Keller group 2005-2011): Director and Professor, University of Neuchatel, since Sept. 2011
Christoph Hauri (Ph.D. Keller group 2005): SNF ass. Professor at EPFL and staff scientist PSI SwissFEL
Amelle Zair (postdoc Keller group 2006-2007): EPSRC researcher (equivalent to a junior professor), Imperial College London, since 2011; Professor, Physics Department, Kings College London, since 2017
Jens Biegert (postdoc Keller group 2001-2006): Professor at ICFO - Institut de Ciències Fotòniques since 2006
John Tisch (postdoc Keller group 2001-2003): Lectureship 2003, Professor Imperial College London since 2009
Günter Steinmeyer (postdoc Keller group 1998-2002): Senior Staff Scientist and Head of the Department, Solid-State Light Sources, MBI, Berlin (since 2002); Full Professor, Department of Physics of the Humboldt-University Berlin, since 2017
Uwe Siegner (postdoc Keller group 1995-1999): Director and Professor, Head of Division 2 Electricity, PTB, Braunschweig, since 1999
Franz X. Kärtner (postdoc Keller group 1993-1997): Professor at University of Karlsruhe (1998); MIT (2001-2010); group leader at CFEL and adjunct Professor at MIT, since 2011

ERC grants of former group members

Matteo Lucchini (Postdoc Keller group 2012-2017): ERC starting grant 2019
Clara Saraceno (PhD Keller group with ETH medal 2012, postdoc partially shared with University of Neuchatel 2013-2016): ERC starting grant 2018
Rachel Grange (PhD Keller group 2006): since 2015 SNF Professor ETH Zurich, ERC starting grant 2016
Thomas Südmeyer (Ph.D. Keller group 2003, postdoc Keller group 2005-2011): ERC starting grant 2011

Habilitations

Lukas Gallmann “Sources and Techniques for Attosecond Science”

Venia Legendi für das Lehrgebiet Experimentalphysik, ETH Zurich, 1. Feb. 2012
Thomas Südmeyer
“New Frontiers in Ultrafast Laser Oscillator”

Venia Legendi für das Lehrgebiet Experimentalphysik, ETH Zurich, 1. Aug. 2011
Rüdiger Paschotta
“Ultrafast Solid-State Lasers”

Venia Legendi für das Lehrgebiet Experimentalphysik, ETHZ, 1. Oct. 2002
Günter Steinmeyer
“New approches to the generation and characterization of few-cycle laser pulses”

Venia Legendi für das Lehrgebiet Experimentalphysik, ETHZ, 1. Oct. 2002
Uwe Siegner
"Femtosecond Dynamics in Semiconductors for Ultrabroadband Optical Excitation”

Venia Legendi für das Lehrgebiet Experimentalphysik, ETHZ, 1. Oct. 1999
Franz X. Kärtner
“New Techniques for Short Pulse Generation in Solid State Lasers: Theory and Experiments”

Venia Legendi für das Lehrgebiet Experimentalphysik, ETHZ, 8. Sept. 1997

Ph.D. Thesis

2022

Pierre-Alexis Chevreuil, “High repetition rate soft-X-ray sources from few-cycle OPCPAs”
Arthur Niedermayer, “Electron dynamics in solids from femtosecond to attosecond timescales”
Lukas Lang, “Thin-disk lasers for high-power ultrafast optical parametric oscillators”
Léonard Krüger
, “Advancing high-repetition rate infrared platforms for broadband frequency comb spectroscopy”

2021

Jaco Fuchs,Novel schemes of attosecond interferometry

2020

Jacob Nürnberg, “Towards semiconductor disk lasers for single-​ and dual-​comb applications
Stefan Hrisafov, “High-​power few-​cycle near-​infrared OPCPA as a source for high repetition rate soft X-​rays”
Nadja Hartmann, “Ultrafast processes on different timescales: from attosecond electron dynamics to femtosecond molecular dynamics”

Luca Pedrelli, “Measurement and reconstruction of electron wavepackets”
Francesco Saltarelli, “Novel concepts for versatile and high-power thin-disk laser oscillators”

2019

Ivan Graumann, “Novel approaches to power scale ultrafast thin-disk lasers at short pulse durations”
Justinas Pupeikis,
“Next generation attosecond technology”
Benjamin Willenberg,
Strong-​field ionization dynamics beyond the electric dipole approximation and towards benchmark experiments on atomic hydrogen
Fabian Schläpfer,Attosecond electron dynamics in III-​V semiconductors

2018

Mikhail Volkov, “Attosecond transient absorption spectroscopy of solids”
Cesare Alfieri,
“Semiconductor devices for ultrafast laser applications”
Nicolas Bigler, “High-​power ultrafast optical parameter chirped pulse amplifiers in the mid-​infrared”
Jannie Vos, “Attosecond photoionization dynamics in small molecules”
Dominik Waldburger
, “Semiconductor disk lasers for optical frequency comb applications”
Aline Mayer
, “Leveraging novel nonlinear devices for compact gigahertz frequency combs”
Andreas Diebold, “High-power ultrafast thin-disk lasers for table-top XUV Generation” 

2017

Lamia Kasmi, “Attosecond band structure effect in photoemission dynamics from solid surfaces”
Sandro Link, “Dual-comb modelocked lasers”

2016

Cornelia Hofmann, “Attosecond electron dynamics in strong-field ionization”
André Ludwig
, “Attosecond and Strong-Field Ionization Dynamics in Atoms and Molecules”

2015

Benedikt Mayer, “Few-cycle mid-infrared OPCPA and applications in strong-field physics”
Sebastian Heuser, “Photoemission dynamics from atomic and molecular systems on the attosecond time scale”
Florian Emaury, “High repetition rate XUV sources based on thin-disk oscillators”
Mario Mangold, “Advances in high-power ultrafast MIXSELs”
Cinia Schriber, “Towards high average power SESAM-modelocked thin-disk lasers with short pulse durations”
Alexander Klenner, "Gigahertz frequency combs from high-power diode-pumped solid-state lasers"

2014

Robert Boge, “Ultrafast momentum spectroscopy in strong-field and XUV single-photon ionization”
Jens Herrmann, “Attosecond transient absorption spectroscopy: controlling extreme ultraviolet light-matter interaction”
Christian Zaugg, “Novel Concepts in Modelocked VECSELs”
Mazyar Sabbar, “Attosecond XUV coincidence spectroscopy”

2013

Reto Locher, "Attosecond photoemission dynamics from noble metal surfaces”
Wolfgang Pallmann, “Passively modelocked electrically pumped VECSELs”
Oliver Sieber, "Scaling high-power ultrafast VECSELs into the femtosecond regime"

2012

Clara Saraceno, "Cutting-edge high-power ultrafast oscillators: pushing the limits of SESAM modelocked thin disk lasers"
Matthias Weger, "Attosecond Velocity-Map-Imaging: Design, setup and angular streaking experiments"
Valentin Wittwer, “New Frontiers of Ultrafast Semiconductor Disk Lasers: High Power MIXSELs and low Noise VECSELs”
Clemens Heese, “High‑Power Mid‑Infrared Femtosecond Laser Pulses"

2011

Selina Pekarek, “High repetition rate frequency combs from diode-pumped solid state lasers”
Oliver Heckl, “Peak power scaling with a modelocked thin disk laser”
Martin Hoffmann, “Electrically and optically pumped semiconductor disk lasers – continuous-wave and modelocked”
Ekatarina Vorobeva, “Short and long-range structural time evolution in optically excited solids probed by X-rays”
Adrian Pfeiffer, "Attosecond Electron Kinematics in Strong Field Single and Double Ionization"

2010

Cyrill Bär, “New Frontiers in Ultrafast High Power Laser Oscillators”
Benjamin Rudin, “High-Power Optically Pumped VECSELs and MIXSELs”

2009

Mirko Holler, “Attosecond strong field control”
Andreas Oehler, “MultiWave - Solid state lasers with up to 100 GHz repetition rate and their application in a novel broadband telecom system”
Max Stumpf, “Diode-Pumped Solid State Lasers for Optical Frequency Combs”
Florian Schapper, “Attosecond structure of high-order harmonics”
Aude-Reine Bellancourt, “Modelocking of semiconductor vertical emitters: from VECSEL to MIXSEL”

2008

Deran Maas, “MIXSEL – a new class of ultrafast semiconductor lasers”
Petrissa Eckle, "Attosecond Angular Streaking"
Christian Erny, "Femtoseocond Mid-IR Chirped-Pulse Optical Parametric Amplifier"
Andreas Rutz, "GaInNAs SESAMs and VECSELs at 1.3 and 1.5 µm wavelength"

2007

Sergio Marchese, "Towards High Field Physics with High Power Thin Disk Laser Oscillators"
Valeria Liverini, "From Passive to Active Devices: GaInNAs as Absorber and Emitter for 1.3 µm Lasers"

2006

Simon Zeller, "Picosecond Solid-State Lasers with GHz Repetition Rate"
Adrian Schlatter, "Noise Porperties of High Repetition-Rate Mode-Locked Lasers"
Arne Heinrich, "Coherent Control of High Harmonic Generation using Attosecond Pulse Trains"
Rachel Grange, "Near infrared semiconductor saturable absorber mirrors for high repetition rate lasers"

2005

Anastassia Gosteva, "Dispersion management and characterization"
Dirk Lorenser, "Picosecond VECSELs with repetition rates up to 50 GHz"
Edith Innerhofer, "High Average Power Yb:YAG Thin Disk Laser and its Application for an RGB Laser Source"
Christoph Hauri, "Intense Ultrashort Laser Pulse Generation For Non-linear Laser-Matter Interactions"
Wouter Kornelis, "Ultrashort pulse characterization in amplitude and phase from the IR to the XUV"
Steve Lecomte, "Diode-Pumped Solid-State Lasers and Optical Parametric Oscillators with Gigahertz Pulse Repetition Rates"

2004

Florian Helbing, "Measurement and control of the Carrier-envelope offset phase"
Alex Aschwanden, "High Peak Power Passively Mode-Locked VECSELs"
Birgit Schenkel, "Supercontinuum Generation and Compression" 
Felix Brunner, "High-Power Femtosecond Lasers and Their Application to Nonlinear Optics"

2003

Thomas Südmeyer, “Novel ultrafast nonlinear devices pumped with high power passively mode-locked lasers”

2002

Lukas Krainer, “High Repetition Rate Solid-State Lasers”

2001

Lukas Gallmann, “Generation and characterization of few-femtosecond optical pulses”
Reto Häring, “Miniature pulsed laser sources: repetition rates from kilohertz to gigahertz”
Marc Achermann, "Ultrafast goes local"
Markus Haiml, "Optimized non-stoichiometric semiconductor materials for applications in ultrafast nonlinear optics”

2000

Jens Kunde, “Optical Control of Ultrafast Semiconductor Nonlinearities”
Jürg Aus der Au, "Towards High-Power Diode-Pumped Femtosecond All-Solid-State Lasers"
Gabriel Spühler, “Compact ultrafast solid-state lasers”
Dirk Sutter, "New Frontiers in Ultrashort Pulse Generation"

1999

Sebastian Arlt, "Coherent Femtosecond Spectroscopy of Exciton-Continuum Interaction in Semiconductors"
Nicolai Matuschek, "Theory and Design of Double-Chirped Mirrors"

1998

Clemens Hönninger, "Ultrafast Ytterbium-Doped Bulk Lasers and Laser Amplifiers"
Regula Fluck, "Compact Pulsed Diode-Pumped Solid-State Lasers at 1.3 µm and 1.5 µm"

1997

Isabella D. Jung, "Limits of Ultrashort Pulse Generation,"

1996

Bernd Braun, "Compact pulsed diode-pumped solid-state lasers"
Daniel Kopf, "Compact diode-pumped femtosecond and cw solid-state lasers

Master Thesis

2015

Thomas Zengerle, “Novel optimized SESAMs for kilowatt ultrafast lasers”

2014

Matthias Schnaubelt, “Towards Attosecond Optical Spectroscopy in Solid-State Systems”

2013

Aline Mayer, “Soliton Modelocking by Cascading of Second-Order Nonlinearities”
Sandro Link, “Noise characterization of prototype integrated MIXSEL”
Andreas Diebold, “Development of a SESAM modelocked Yb:CALGO thin disk laser: exploring short pulse durations”

2012

Cornelia Hofmann, “Electron dynamics after strong field tunnel ionization”

2011

Robert van der Linden, TU Eindhoven, “Active stabilization of a SESAM-modelocked VECSEL”
Nick Hartmann, “CPOPA”
Mario Mangold, “Characterization of gain parameters in VECSEL structures”
Cinia Schriber, “Polarized Michelson interferometer to characterize the lens of thin-disk crystals”

2010

Daniel Streuli, “Modelocked Er:Yb:glass laser with high repetition rate”
Christian Zaugg, “Noise characterization of a modelocked VECSEL”

2009

Camille Estienne, “A pulsed dye laser for photo-ionization of magnesium atoms”
Oliver Sieber, “GDD in ML VECSEL”

2008

Johannes Herrnsdorf, “Optimization of VECSEL gain structures”

2007

Martin Haag, “3 µm FROG …”
Martin Hoffmann, “Passively modelocked Yb:KYW waveguide laser”
Michael Ruosch, “Aufbau einer Multipass-Zelle für den Einsatz in einem Yb:YAG Scheibenlaser”

2006

Daniel Iwaniuk, “Neue Laseranordnung für hochpräzise Messungen nichtlinearer Reflektivitäten über einem grossen, dynamischen Bereich”
Elena Mengotti, “Towards time resolved XUV digital in-line holography”
Guillaume Genoud, “Towards time resolved XUV digital in-line holography”

2005

Mirko Holler, “Energiemessung von hohen Harmonischen”
Florian Zäh, “Light ion implantation in KYW”
Peter Kaspar, “Dependence of HHG on the duration of few cycle laser pulses”
Christian Walther, “High precision wide dynamic range nonlinear reflectivity measurements”

2004

Benjamin Rudin, “Rausch-Messungen an modengekoppelten Festkörper-Lasern”
Matthias Raunhardt, “Thermo-Optische Schalter./Abschächer mit Polymerwellenleitern”
Gustavo Aeppli, “Faserkopplung und Packaging von integrierten Polymerkomponenten”
Christian Erny, “Repetitionsraten abstimmbarer 10-GHz Er:Yb:Glas Laser”
Andreas Rutz, “Beeinflussung des Anwachsverhaltens beim epitaktischen Wachstum von GaAs auf CaF2 mittels niedrigenergetischer Elektronenbestrahlung”

2003

Sergio Vincenzo Marchese, “Nichtlineare frequenzkonversion mit modengekoppelten Hochleistungslasern”
Markus Kalisch, “Aufbau eines diodengepumpten, passiv modengekoppelten Nd:YVO4-Lasers bei 1064 nm mit 40-GHz Repetitionrate”
Jochen Sturm, "High-Precision Wide-Dynamic-Range Nonlinear Reflectivity Measurement“

2002

Jens Rauschenberger, (Betreuer Steven Cundiff, JILA, Boulder USA).
Adrian Schlatter, “Untersuchungen zur Stabilität von modengekoppelten Lasern”
Simon Zeller, “Entwicklungen eines modengekoppelten 1.3 µm lasers”
Laurent Balet
Mathis Bruck
, “Absolute laser beam stabilization at a kHz rate”

2001

Isabell Thomann, “Aufbau eines Stretcher-Kompressor Systems zur Dispersionskompensation eines Breitbandspektrums”
Martin Steiger, “Zeit- und Ortsaufgelöste Zwei-Farben-Pump-Probenmessungen von Halbleiternanostrukturen”
Christoph Hauri, “Aufbau eines adaptiven akusto-optischen Systems zur Reduktion der Bandbreitebegrenzung von Ti:Saphir-Verstärkern”

2000

Edith Innerhofer, “High-power diode-pumped femtosecond Yb:KGW laser”
Thomas Fritsche, “Erzeugung und Charakterisierung von frequenzverdoppelten sub-10-fs Ti:Saphir-Pulsen”
Felix Brunner, "Aufbau und Charakterisierung von modengekoppelten diodengepumpten Festkörperlasern"

1999

Benedict J. Baumann, "Femtosecond pulse shaping"

1998

Marcel Graf, “Characterisierung ytterbiumdotierter Gläser im passiv modengekoppelten Laser”
Lukas Gallmann, "Characterizierung von ultrakurzen Laserpulsen"

1997

Dominik Zumbühl, "Stabilitätsuntersuchungen von modengekoppelten Ti:Saphir-Laser"
Reto Häring, "Pulsed Pumping of Passively Q-switched Microchip Lasers"

1996

Ryan Held, "Breitbandige Messung der Gruppenlaufzeit-Dispersion im fs-Bereich"
Rene Tschaggelar, "Synchronisierte Femtosekunden-Laser"
Gabriel Spühler, "Diodengepumpte modengekoppelte 1.5 µm-Lasersysteme"
Jürg aus der Au, "Femtosekunden Nd:Glas-Laser"
Franz Häller, "Interferometrische Untersuchung des Einflusses der Dispersion auf Amplitude und Phase ultrakurzer Laserpulse"

1995

B. Cappelli, "Dynamik von Solitonen in fast integrablen Systemen"

1994

I. G. Calasso, "Q-switching-Instabiltät in passiv-modengekoppelten Festkörperlaser"
M. Lanker, "Aktive Modenkopplung eines Nd:YLF Lasers mit Quantum-Well Modulatoren"

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