U. Keller

Research interests

Publications

• Charge migration and charge transfer in molecular systems

  Structural Dynamics · 2017 · 10.1063/1.4996505

• Dual-comb spectroscopy of water vapor with a free-running semiconductor disk laser

  Science · 2017 · 10.1126/science.aam7424

• Attosecond dynamical Franz-Keldysh effect in polycrystalline diamond

  Science · 2016 · 10.1126/science.aag1268

• Gravitational slopes, geomorphology, and material strengths of the nucleus of comet 67P/Churyumov-Gerasimenko from OSIRIS observations

  Astronomy and Astrophysics · 2015 · https://doi.org/10.1051/0004-6361/201526379

• Ultrafast resolution of tunneling delay time

  Optica · 2014 · 10.1364/optica.1.000343

• What will it take to observe processes in 'real time'?

  Nature Photonics · 2014 · 10.1038/nphoton.2014.48

• Attosecond Science: Recent Highlights and Future Trends

  Annual Review of Physical Chemistry · 2012 · 10.1146/annurev-physchem-032511-143702

• Attoclock reveals natural coordinates of the laser-induced tunnelling current flow in atoms

  Nature Physics · 2011 · 10.1038/nphys2125

• Attosecond angular streaking

  Nature Physics · 2008 · 10.1038/nphys982

• Attosecond Ionization and Tunneling Delay Time Measurements in Helium

  Science · 2008 · 10.1126/science.1163439

• Passively modelocked surface-emitting semiconductor lasers

  Physics Reports · 2006 · 10.1016/j.physrep.2006.03.004

• Optical characterization of semiconductor saturable absorbers

  Applied Physics B · 2004 · 10.1007/s00340-004-1535-1

• Generation of intense, carrier-envelope phase-locked few-cycle laser pulses through filamentation

  Applied Physics B · 2004 · 10.1007/s00340-004-1650-z

• Recent developments in compact ultrafast lasers

  Nature · 2003 · 10.1038/nature01938

• Passive mode locking with slow saturable absorbers

  Applied Physics B · 2001 · 10.1007/s003400100726

• Semiconductor saturable-absorber mirror–assisted Kerr-lens mode-locked Ti:sapphire laser producing pulses in the two-cycle regime

  Optics Letters · 1999 · 10.1364/ol.24.000631

• Carrier-envelope offset phase control: A novel concept for absolute optical frequency measurement and ultrashort pulse generation

  Applied Physics B · 1999 · 10.1007/s003400050813

• Q-switching stability limits of continuous-wave passive mode locking

  Journal of the Optical Society of America B · 1999 · 10.1364/josab.16.000046

• Frontiers in Ultrashort Pulse Generation: Pushing the Limits in Linear and Nonlinear Optics

  Science · 1999 · 10.1126/science.286.5444.1507

• Experimentally confirmed design guidelines for passively Q-switched microchip lasers using semiconductor saturable absorbers

  Journal of the Optical Society of America B · 1999 · 10.1364/josab.16.000376

• Mode-locking with slow and fast saturable absorbers-what's the difference?

  IEEE Journal of Selected Topics in Quantum Electronics · 1998 · 10.1109/2944.686719

• 56-ps passively Q-switched diode-pumped microchip laser

  Optics Letters · 1997 · https://doi.org/10.1364/ol.22.000381

• Design and fabrication of double-chirped mirrors

  Optics Letters · 1997 · https://doi.org/10.1364/ol.22.000831

• Soliton mode-locking with saturable absorbers

  IEEE Journal of Selected Topics in Quantum Electronics · 1996 · 10.1109/2944.571754

• Semiconductor saturable absorber mirrors (SESAM's) for femtosecond to nanosecond pulse generation in solid-state lasers

  IEEE Journal of Selected Topics in Quantum Electronics · 1996 · https://doi.org/10.1109/2944.571743

• Stabilization of solitonlike pulses with a slow saturable absorber

  Optics Letters · 1995 · https://doi.org/10.1364/ol.20.000016

• Solid-state low-loss intracavity saturable absorber for Nd:YLF lasers: an antiresonant semiconductor Fabry–Perot saturable absorber

  Optics Letters · 1992 · 10.1364/ol.17.000505

Current projects

No projects listed.