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Ursula Keller

Ursula Keller

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Best Female Scientists
2025

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Best Female Scientists 120 563 535 3 3 1283 52638
Physics 122 756 716 16 16 1254 53556

Ursula Keller publications per year

The chart shows the history of publications by Ursula Keller between 1986 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ursula Keller published across 40 years, from 1986 to 2025, averaging 35.1 papers a year. Output peaked at 72 publications in 2005. 75 of the 1,403 publications appeared in the last two years.

No. of publications
20 40 60
Bar chart. Horizontal axis: year, 1986 to 2025. Vertical axis: number of publications, 0 to 72. Peak 72 publications in 2005. 1986: 3 publications 1987: 0 publications 1988: 2 publications 1989: 3 publications 1990: 10 publications 1991: 8 publications 1992: 12 publications 1993: 11 publications 1994: 15 publications 1995: 22 publications 1996: 27 publications 1997: 28 publications 1998: 33 publications 1999: 47 publications 2000: 53 publications 2001: 53 publications 2002: 38 publications 2003: 30 publications 2004: 48 publications 2005: 72 publications 2006: 42 publications 2007: 35 publications 2008: 22 publications 2009: 43 publications 2010: 40 publications 2011: 56 publications 2012: 41 publications 2013: 59 publications 2014: 69 publications 2015: 57 publications 2016: 41 publications 2017: 65 publications 2018: 41 publications 2019: 50 publications 2020: 19 publications 2021: 38 publications 2022: 46 publications 2023: 49 publications 2024: 37 publications 2025: 38 publications
1986 2025

1,403 publications in total across all disciplines

View publications per year as a table
Ursula Keller: publications per year, 1986 to 2025
Year Publications
1986 3
1987 0
1988 2
1989 3
1990 10
1991 8
1992 12
1993 11
1994 15
1995 22
1996 27
1997 28
1998 33
1999 47
2000 53
2001 53
2002 38
2003 30
2004 48
2005 72
2006 42
2007 35
2008 22
2009 43
2010 40
2011 56
2012 41
2013 59
2014 69
2015 57
2016 41
2017 65
2018 41
2019 50
2020 19
2021 38
2022 46
2023 49
2024 37
2025 38
Total 1,403
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Ursula Keller publication distribution in Physics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Physics in 2026. The highlighted bar marks where Ursula Keller sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 70 bars. Horizontal axis: publications, 103–122 to 1,469+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 323–342 publications. The last bar groups every scientist with 1,469 publications or more. The highlighted bar, 1,243–1,262 publications, is where this scientist sits. 103–122 publications: 7 scientists 123–142 publications: 10 scientists 143–162 publications: 31 scientists 163–182 publications: 35 scientists 183–202 publications: 53 scientists 203–222 publications: 81 scientists 223–242 publications: 85 scientists 243–262 publications: 112 scientists 263–282 publications: 114 scientists 283–302 publications: 126 scientists 303–322 publications: 136 scientists 323–342 publications: 162 scientists 343–362 publications: 155 scientists 363–382 publications: 156 scientists 383–402 publications: 134 scientists 403–422 publications: 145 scientists 423–442 publications: 147 scientists 443–462 publications: 131 scientists 463–482 publications: 131 scientists 483–502 publications: 116 scientists 503–522 publications: 106 scientists 523–542 publications: 103 scientists 543–562 publications: 87 scientists 563–582 publications: 84 scientists 583–602 publications: 94 scientists 603–622 publications: 70 scientists 623–642 publications: 76 scientists 643–662 publications: 60 scientists 663–682 publications: 54 scientists 683–702 publications: 60 scientists 703–722 publications: 48 scientists 723–742 publications: 64 scientists 743–762 publications: 48 scientists 763–782 publications: 37 scientists 783–802 publications: 43 scientists 803–822 publications: 34 scientists 823–842 publications: 36 scientists 843–862 publications: 32 scientists 863–882 publications: 32 scientists 883–902 publications: 31 scientists 903–922 publications: 25 scientists 923–942 publications: 15 scientists 943–962 publications: 24 scientists 963–982 publications: 13 scientists 983–1,002 publications: 21 scientists 1,003–1,022 publications: 21 scientists 1,023–1,042 publications: 16 scientists 1,043–1,062 publications: 9 scientists 1,063–1,082 publications: 19 scientists 1,083–1,102 publications: 11 scientists 1,103–1,122 publications: 17 scientists 1,123–1,142 publications: 11 scientists 1,143–1,162 publications: 7 scientists 1,163–1,182 publications: 4 scientists 1,183–1,202 publications: 10 scientists 1,203–1,222 publications: 8 scientists 1,223–1,242 publications: 16 scientists 1,243–1,262 publications: 4 scientists 1,263–1,282 publications: 10 scientists 1,283–1,302 publications: 5 scientists 1,303–1,322 publications: 7 scientists 1,323–1,342 publications: 4 scientists 1,343–1,362 publications: 8 scientists 1,363–1,382 publications: 6 scientists 1,383–1,402 publications: 7 scientists 1,403–1,422 publications: 3 scientists 1,423–1,442 publications: 4 scientists 1,443–1,462 publications: 4 scientists 1,463–1,468 publications: 3 scientists 1,469+ publications: 100 scientists
103–122 publications 1,469+

This scientist: 1,254 publications — 96th percentile

96% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,469 publications or more.

View publications distribution as a table
Number of Physics scientists by publication count, Research.com 2026 ranking edition. Based on 3,678 ranked scientists.
Publications Scientists This scientist
103–122 7
123–142 10
143–162 31
163–182 35
183–202 53
203–222 81
223–242 85
243–262 112
263–282 114
283–302 126
303–322 136
323–342 162
343–362 155
363–382 156
383–402 134
403–422 145
423–442 147
443–462 131
463–482 131
483–502 116
503–522 106
523–542 103
543–562 87
563–582 84
583–602 94
603–622 70
623–642 76
643–662 60
663–682 54
683–702 60
703–722 48
723–742 64
743–762 48
763–782 37
783–802 43
803–822 34
823–842 36
843–862 32
863–882 32
883–902 31
903–922 25
923–942 15
943–962 24
963–982 13
983–1,002 21
1,003–1,022 21
1,023–1,042 16
1,043–1,062 9
1,063–1,082 19
1,083–1,102 11
1,103–1,122 17
1,123–1,142 11
1,143–1,162 7
1,163–1,182 4
1,183–1,202 10
1,203–1,222 8
1,223–1,242 16
1,243–1,262 4 1,254
1,263–1,282 10
1,283–1,302 5
1,303–1,322 7
1,323–1,342 4
1,343–1,362 8
1,363–1,382 6
1,383–1,402 7
1,403–1,422 3
1,423–1,442 4
1,443–1,462 4
1,463–1,468 3
1,469+ 100
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Ursula Keller D-index placement in Physics in 2026

The chart shows the D-index (discipline H-index) distribution of Physics scientists ranked by Research.com in 2026. The highlighted bar marks where Ursula Keller sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 59 bars. Horizontal axis: D-Index, 70–71 to 185+. Vertical axis: number of scientists, 0 to 167. Most scientists, 167, have 80–81 D-Index. The last bar groups every scientist with 185 D-Index or more. The highlighted bar, 122–123 D-Index, is where this scientist sits. 70–71 D-Index: 76 scientists 72–73 D-Index: 110 scientists 74–75 D-Index: 143 scientists 76–77 D-Index: 153 scientists 78–79 D-Index: 144 scientists 80–81 D-Index: 167 scientists 82–83 D-Index: 167 scientists 84–85 D-Index: 166 scientists 86–87 D-Index: 132 scientists 88–89 D-Index: 155 scientists 90–91 D-Index: 134 scientists 92–93 D-Index: 137 scientists 94–95 D-Index: 102 scientists 96–97 D-Index: 112 scientists 98–99 D-Index: 110 scientists 100–101 D-Index: 116 scientists 102–103 D-Index: 97 scientists 104–105 D-Index: 103 scientists 106–107 D-Index: 87 scientists 108–109 D-Index: 90 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 78 scientists 114–115 D-Index: 75 scientists 116–117 D-Index: 67 scientists 118–119 D-Index: 69 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 59 scientists 124–125 D-Index: 53 scientists 126–127 D-Index: 42 scientists 128–129 D-Index: 41 scientists 130–131 D-Index: 33 scientists 132–133 D-Index: 32 scientists 134–135 D-Index: 45 scientists 136–137 D-Index: 19 scientists 138–139 D-Index: 24 scientists 140–141 D-Index: 28 scientists 142–143 D-Index: 31 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 20 scientists 148–149 D-Index: 12 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 24 scientists 154–155 D-Index: 23 scientists 156–157 D-Index: 15 scientists 158–159 D-Index: 15 scientists 160–161 D-Index: 11 scientists 162–163 D-Index: 17 scientists 164–165 D-Index: 12 scientists 166–167 D-Index: 11 scientists 168–169 D-Index: 9 scientists 170–171 D-Index: 9 scientists 172–173 D-Index: 11 scientists 174–175 D-Index: 4 scientists 176–177 D-Index: 8 scientists 178–179 D-Index: 5 scientists 180–181 D-Index: 3 scientists 182–183 D-Index: 4 scientists 184 D-Index: 4 scientists 185+ D-Index: 99 scientists
70–71 D-Index 185+

This scientist: 122 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 185 D-Index or more.

View D-Index distribution as a table
Number of Physics scientists by D-index, Research.com 2026 ranking edition. Based on 3,678 ranked scientists.
D-Index Scientists This scientist
70–71 76
72–73 110
74–75 143
76–77 153
78–79 144
80–81 167
82–83 167
84–85 166
86–87 132
88–89 155
90–91 134
92–93 137
94–95 102
96–97 112
98–99 110
100–101 116
102–103 97
104–105 103
106–107 87
108–109 90
110–111 67
112–113 78
114–115 75
116–117 67
118–119 69
120–121 60
122–123 59 122
124–125 53
126–127 42
128–129 41
130–131 33
132–133 32
134–135 45
136–137 19
138–139 24
140–141 28
142–143 31
144–145 22
146–147 20
148–149 12
150–151 16
152–153 24
154–155 23
156–157 15
158–159 15
160–161 11
162–163 17
164–165 12
166–167 11
168–169 9
170–171 9
172–173 11
174–175 4
176–177 8
178–179 5
180–181 3
182–183 4
184 4
185+ 99
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Research.com Recognitions

  • 2025 - Research.com Best Female Scientists Award
  • 2020 - Frederic Ives Medal, The Optical Society For fundamental contributions to ultrafast lasers technology, especially in the development of high peak and average power oscillators and important breakthroughs in attosecond science.
  • 2019 - IEEE Edison Medal For pioneering and fundamental contributions to and leadership in useable, compact ultrafast laser technology, enabling applications in metrology, sensing, and biophotonics.
  • 2014 - SPIE Fellow
  • 2003 - OSA Fellows For pioneering contributions to the development of femtosecond laser technology and applications and the development of semiconductor saturable absorber mirrors.

Overview

Ursula Keller is affiliated with ETH Zurich in Switzerland and has published extensively in the fields of Physics and Astronomy and Engineering. Their research primarily focuses on Atomic and Molecular Physics, and Optics, as well as Electrical and Electronic Engineering, with notable contributions in Spectroscopy, Instrumentation, and Biomedical Engineering.

The scientist's main topics of work include:

  • Advanced Fiber Laser Technologies
  • Laser-Matter Interactions and Applications
  • Solid State Laser Technologies
  • Photonic and Optical Devices
  • Spectroscopy and Laser Applications
  • Semiconductor Lasers and Optical Devices
  • Photonic Crystal and Fiber Optics

Ursula Keller's recent papers demonstrate a focus on dual-comb lasers, femtosecond lasers, and high-speed quantum cascade detectors. Selected publications include:

  • Spatially multiplexed single-cavity dual-comb laser, 2022, published in Optica
  • Femtosecond dual-comb Yb:CaF2 laser from a single free-running polarization-multiplexed cavity for optical sampling applications, 2020, published in Optics Express
  • Ionization in intense laser fields beyond the electric dipole approximation: concepts, methods, achievements and future directions, 2021, published in Journal of Physics B Atomic Molecular and Optical Physics
  • Coherently averaged dual-comb spectroscopy with a low-noise and high-power free-running gigahertz dual-comb laser, 2023, published in Optics Express
  • High-speed quantum cascade detector characterized with a mid-infrared femtosecond oscillator, 2021, published in Optics Express

Frequent co-authors who have collaborated extensively with Ursula Keller include:

  • C. R. Phillips
  • Benjamin Willenberg
  • Justinas Pupeikis
  • M. Golling
  • Jonas Heidrich

The scientist frequently publishes in the following venues:

  • Optics Express
  • Conference on Lasers and Electro-Optics
  • EPJ Web of Conferences
  • Optica
  • arXiv (Cornell University)

In addition to research papers, Ursula Keller has authored a book titled Ultrafast Lasers, published by Springer Nature in 2021.

Ursula Keller has been recognized with several awards, including:

  • Frederic Ives Medal from The Optical Society in 2020, for contributions to ultrafast lasers technology and breakthroughs in attosecond science
  • IEEE Edison Medal in 2019, for pioneering work and leadership in compact ultrafast laser technology applicable to metrology, sensing, and biophotonics
  • SPIE Fellow in 2014
  • OSA Fellow in 2003, for pioneering contributions to femtosecond laser technology and semiconductor saturable absorber mirrors

Best Publications

  • Recent developments in compact ultrafast lasers

    Ursula Keller

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

    U. Keller;K.J. Weingarten;F.X. Kartner;D. Kopf

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

    H.R. Telle;G. Steinmeyer;A.E. Dunlop;J. Stenger

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

    C. Hönninger;R. Paschotta;F. Morier-Genoud;M. Moser

  • Attosecond Ionization and Tunneling Delay Time Measurements in Helium

    P. Eckle;A. N. Pfeiffer;C. Cirelli;A. Staudte

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

    U. Keller;D. A. B. Miller;G. D. Boyd;T. H. Chiu

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

    Christoph Hauri;W. Kornelis;F. Helbing;A. Heinrich

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

    Dirk H. Sutter;G. Steinmeyer;L. Gallmann;N. Matuschek

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

    G. Steinmeyer;D. H. Sutter;L. Gallmann;N. Matuschek

  • Soliton mode-locking with saturable absorbers

    F.X. Kartner;I.D. Jung;U. Keller

  • Passively modelocked surface-emitting semiconductor lasers

    Ursula Keller;Anne C. Tropper

  • Ultrafast ytterbium-doped bulk lasers and laser amplifiers

    C. Hönninger;R. Paschotta;M. Graf;F. Morier-Genoud

  • Design and fabrication of double-chirped mirrors

    F. X. Kärtner;N. Matuschek;T. Schibli;U. Keller

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

    F.X. Kurtner;J.A. der Au;U. Keller

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

    Adrian N. Pfeiffer;Claudio Cirelli;Mathias Smolarski;Darko Dimitrovski

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

    G. J. Spühler;R. Paschotta;R. Fluck;B. Braun

  • Passive mode locking with slow saturable absorbers

    R. Paschotta;U. Keller

  • Stabilization of solitonlike pulses with a slow saturable absorber

    F. X. Kärtner;U. Keller

  • 60-W average power in 810-fs pulses from a thin-disk Yb:YAG laser

    E. Innerhofer;T. Südmeyer;F. Brunner;R. Häring

  • Self-starting 6.5-fs pulses from a Ti:sapphire laser.

    I. D. Jung;F. X. Kärtner;N. Matuschek;D. H. Sutter

Frequent Co-Authors

Rüdiger Paschotta
Rüdiger Paschotta RP Photonics Consulting
Franz X. Kärtner
Franz X. Kärtner Universität Hamburg
Günter Steinmeyer
Günter Steinmeyer Humboldt-Universität zu Berlin
Klaus Petermann
Klaus Petermann Technical University of Berlin
Martin M. Fejer
Martin M. Fejer Stanford University
Michal Lipson
Michal Lipson Columbia University
Alexander L. Gaeta
Alexander L. Gaeta Columbia University
Günter Huber
Günter Huber Universität Hamburg
Yoshitomo Okawachi
Yoshitomo Okawachi Columbia University
Fetah Benabid
Fetah Benabid Xlim Research Institute

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