Prof. Thomas Kuehl Profile

Prof. Thomas Kuehl

at Gesellschaft für Schwerionenforschung GmbH

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Author

Publications (16)

Proceedings Article | 18 April 2021 Presentation

Enhanced scattering from a locally produced transient plasma grating in a plasma-based amplifier

Gregory Vieux, Silvia Cipiccia, Gregor Welsh, Sam Yoffe, Felix Gaertner, Matthew Tooley, Bernhard Ersfeld, Enrico Brunetti, Bengt Eliasson, MinSup Hur, Joao Dias, Thomas Kuehl, Dino Jaroszynski

Proceedings Volume 11778, 117780L (2021) https://doi.org/10.1117/12.2595297

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The increasing demand for high laser powers is placing huge demands on current laser technology. This is now reaching a limit, and to realise new areas of research promised at high intensities, new cost-effective and technically feasible ways of scaling up the laser power and controlling its optical characteristics are required. It is likely that ultra-compact, time-dependent, plasma-based amplifiers and optical elements (such as mirrors, polarisers, waveplates, etc.) will be required to reach powers exceeding tens of petawatts and possibly exawatts, and to manipulate the laser beams. Plasma is a robust optical medium as it is broken-down and can sustain extremely high electric fields. Plasma-based optical elements will most likely require the production of transient plasma gratings (TPGs), which take advantage of the ponderomotive force of the beat of at least two laser pulses. To create an amplifier, the TPG is formed through the action of the beat wave of a pump and seed pulse, which has a phase velocity satisfying the conditions for energy and momentum conservation of the three waves, where the third wave is a Langmuir or ion acoustic wave. Other optical elements will normally require static TPGs produced by degenerate driver pulses. Here we present the results of an experimental campaign conducted at the Central Laser Facility, where we have studied chirped pulse Raman amplification at high intensities. We have used a relatively long duration, frequency chirped, pump pulse to limit the growth of noise amplification, while ensuring amplification of the short seed pulse. We show that by changing the sign of the frequency chirp of the pump, the measured back-scattered and amplified seed energies change significantly. A negative chirp leads to a strong reduction in scattering from thermal density fluctuations, but seed amplification saturates. In contrast, for a positive frequency chirp, scattered energy continues to increase with increasing plasma density, without showing any sign of saturation, for the range of densities studied. From simulations we attribute this observation to the production of a local, long-lived, static TPG that continues to scatter the pump pulse long after it has passed. We will discuss the specific conditions that should be satisfied to produce such a grating. The ability to produce and maintain robust TPGs may provide a breakthrough in technologies for manipulating, reflecting and compressing ultra-intense laser pulses.

Proceedings Article | 14 May 2019 Presentation

Chirped pulse Raman amplification in plasma (Conference Presentation)

Gregory Vieux, Silvia Cipiccia, Gregor Welsh, Sam Yoffe, Matthew Tooley, Craig Picken, Graeme McKendrick, Felix Gaertner, Enrico Brunetti, Bengt Eliasson, Bernhard Ersfeld, MinSup Hur, John Farmer, Joao Dias, Thomas Kuehl, Alexander Pukhov, Dino Jaroszynski

Proceedings Volume 11036, 1103604 (2019) https://doi.org/10.1117/12.2522976

KEYWORDS: Plasma, Raman spectroscopy, Laser applications, Laser amplifiers, Backscatter, Raman scattering, Scattering, Capillaries, Picosecond phenomena

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Proceedings Article | 6 October 2011 Paper

Towards high photon-number soft x-ray lasers

B. Ecker, B. Aurand, D. Hochhaus, T. Kuehl, P. Neumayer, H. Zhao, B. Zielbauer, K. Cassou, S. Daboussi, O. Guilbaud, S. Kazamias, D. Ros, E. Oliva, T. Le, P. Zeitoun

Proceedings Volume 8140, 81400J (2011) https://doi.org/10.1117/12.897277

KEYWORDS: Mirrors, Amplifiers, X-ray lasers, Spherical lenses, Extreme ultraviolet, Picosecond phenomena, Silver, Stochastic processes, Laser systems engineering, Optical amplifiers

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Proceedings Article | 5 October 2011 Paper

Stable and long-time operation of a soft x-ray laser for user applications experiments

D. Ros, O. Guilbaud, S. Kazamias, M. Pittman, K. Cassou, S. Daboussi, O. Neveu, J. Demailly, B. Cros, G. Maynard, B. Zielbauer, D. Zimmer, T. Kühl, S. Lacombe, A. Klisnick, S. Bastiani-Ceccoti, G. Tallents, E. Wagenaars, L.ucy Wilson, Ph. Zeitoun

Proceedings Volume 8140, 81400E (2011) https://doi.org/10.1117/12.894958

KEYWORDS: X-ray lasers, Extreme ultraviolet, Laser applications, Laser development, Crystals, Infrared radiation, Streak cameras, Picosecond phenomena, Molybdenum, Plasma

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Proceedings Article | 14 September 2011 Paper

Strong field amplification of XUV: phase matching aspects

J. Seres, E. Seres, B. Ecker, B. Landgraf, D. Hochhaus, D. Zimmer, V. Bagnoud, B. Aurand, B. Zielbauer, T. Kuehl, C. Spielmann

Proceedings Volume 8140, 814009 (2011) https://doi.org/10.1117/12.892888

KEYWORDS: Extreme ultraviolet, Electrons, X-rays, Argon, High harmonic generation, Gas lasers, Absorption, Ions, Chemical species, Phase matching

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Proceedings Article | 10 June 2011 Paper

LASERIX: an open facility for developments of Soft X-ray and EUV lasers and applications

D Ros, O. Guilbaud, S. Kazamias, M. Pittman, J.-C. Lagron, B Zielbauer, G. Mourou, K. Cassou, B. Cros, G. Maynard, Ph. Zeitoun, D. Zimmer, T Kuehl

Proceedings Volume 8080, 808012 (2011) https://doi.org/10.1117/12.886641

KEYWORDS: Extreme ultraviolet, X-ray lasers, Laser applications, Crystals, Laser development, Laser sources, X-rays, Neodymium, Laser crystals, Laser systems engineering

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Proceedings Article | 4 June 2010 Paper

Demonstration of an efficient pumping scheme for a 7.36-nm Ni-like samarium soft x-ray laser

Daniel Zimmer, David Ros, Olivier Guilbaud, Jamil Habib, S. Kazamias, Bernhard Zielbauer, Bastian Aurand, Vincent Bagnoud, Boris Ecker, Daniel Hochhaus, Paul Neumayer, Thomas Kühl

Proceedings Volume 7721, 77211O (2010) https://doi.org/10.1117/12.855011

KEYWORDS: X-ray lasers, Samarium, Picosecond phenomena, Laser energy, Pulsed laser operation, Singular optics, Plasma, X-rays, Energy efficiency, Absorption

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Proceedings Article | 26 May 2010 Paper

Tuning the high-order harmonic lines of a Nd:Glass laser for soft x-ray laser seeding

Daniel Hochhaus, Jozef Seres, Bastian Aurand, Boris Ecker, Bernhard Zielbauer, Daniel Zimmer, Christian Spielmann, Thomas Kühl

Proceedings Volume 7721, 77211N (2010) https://doi.org/10.1117/12.855506

KEYWORDS: X-ray lasers, Pulsed laser operation, Neodymium glass lasers, Extreme ultraviolet, Ions, Laser systems engineering, Zirconium, Molybdenum, Spectroscopy, Charge-coupled devices

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Proceedings Article | 29 September 2009 Paper

Characterization of a 10Hz double-pulse non-normal incidence pumped transient collisional Ni-like molybdenum soft x-ray laser for applications

Daniel Zimmer, Bernhard Zielbauer, Olivier Guilbaud, Jamil Habib, Sophie Kazamias, Moana Pittman, David Ros, Vincent Bagnoud, Boris Ecker, Daniel Hochhaus, Thomas Kuehl

Proceedings Volume 7451, 745108 (2009) https://doi.org/10.1117/12.825224

KEYWORDS: X-ray lasers, Picosecond phenomena, Molybdenum, Mirrors, Near field, Laser systems engineering, Sapphire lasers, Plasma, Spherical lenses, Diagnostics

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Proceedings Article | 29 September 2009 Paper

Perspectives of XUV sources development on LASERIX facility, ILE, and ELI

D. Ros, O. Guilbaud, S. Kazamias, M. Pittman, J.-C. Lagron, B. Zielbauer, J. Habib, J.-P. Chambaret, G. Mourou, K. Cassou, B. Cros, G. Maynard, Ph. Zeitoun, S. Sebban, J. Gautier, A. Klisnick, S. de Rossi, S. Jacquemot, P. Audebert, B. Rus, D. Zimmer, T. Kühl

Proceedings Volume 7451, 74510A (2009) https://doi.org/10.1117/12.826568

KEYWORDS: Extreme ultraviolet, Laser development, X-ray lasers, Crystals, High power lasers, Laser applications, Optical pumping, Laser sources, Laser systems engineering, Laser crystals

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Proceedings Article | 29 September 2009 Paper

X-ray laser developments at PHELIX

Thomas Kuehl, Bastian Aurand, Vincent Bagnoud, Boris Ecker, Udo Eisenbarth, Jérôme Fils, Daniel Hochhaus, Dasa Javorkova, Paul Neumayer, Bernhard Zielbauer, Daniel Zimmer, Jamil Habib, Sophie Kazamias, Annie Klisnick, David Ros, Josef Seres, Christian Spielmann, Daniel Ursescu

Proceedings Volume 7451, 74510M (2009) https://doi.org/10.1117/12.826212

KEYWORDS: X-ray lasers, Amplifiers, Mirrors, Laser development, Picosecond phenomena, Spherical lenses, Pulsed laser operation, Beam splitters, Plasma, Ions

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Proceedings Article | 6 December 2006 Paper

New PW stretcher-compressor design for PHELIX laser

D. Javorkova, P. Neumayer, Th. Kühl, S. Borneis, E. Brambrink, C. Bruske, E. Gaul, S. Götte, T. Hahn, H. Heuck, S. Kunzer, T. Merz, D. Reemts, M. Roth, F. Schrader, A. Tauschwitz, R. Thiel, D. Ursescu, P. Wiewior, B. Zielbauer

Proceedings Volume 5945, 59451C (2006) https://doi.org/10.1117/12.638979

KEYWORDS: Mirrors, Optical amplifiers, Spherical lenses, Pulsed laser operation, Diffraction gratings, Laser systems engineering, Dispersion, Tolerancing, Fusion energy, Laser development

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Proceedings Article | 19 December 2003 Paper

Near-field imaging of Ni-like silver transient collisional x-ray laser

Olivier Guilbaud, Matthew Edwards, Annie Klisnick, David Ros, Gerard Jamelot, Denis Joyeux, Daniel Phalippou, Huajing Tang, Paul Neumayer, Daniel Ursescu, Greg Tallents, Thomas Kuehl, K. Cassou, Kamal Bouhouch, Masataka Kado, Masaharu Nishikino, Kota Sukegawa, Maki Kishimoto, Masahiko Ishino, Keisuke Nagashima, Hiroyuki Daido, Wolfgang Seelig, Stefan Borneis, Erhard Gaul, W. Geithner, C. Hafner, Piotr Wiewior

Proceedings Volume 5197, (2003) https://doi.org/10.1117/12.507090

KEYWORDS: X-ray lasers, Plasma, Near field, Mirrors, Silver, Imaging devices, Picosecond phenomena, Pulsed laser operation, Interferometry, Zirconium

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Proceedings Article | 12 December 2001 Paper

X-ray laser spectroscopy on lithium-like ions

Paul Neumayer, J. Alvarez, Bruno Becker-de Mos, Stefan Borneis, K. Brueck, Erhard Gaul, C. Haefner, Karol Janulewicz, Thomas Kuehl, Dieter Marx, Irene Reinhard, Marco Tomaselli, Peter Nickles, Wolfgang Sandner, Wolfgang Seelig

Proceedings Volume 4505, (2001) https://doi.org/10.1117/12.450596

KEYWORDS: Ions, X-ray lasers, Mirrors, Laser spectroscopy, Spectroscopy, Laser systems engineering, Pulsed laser operation, Diffraction gratings, Ray tracing, Data modeling

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Proceedings Article | 23 April 2001 Open Access

PHELIX: a petawatt high-energy laser for heavy ion experiments

M. Roth, Bruno Becker-de Mos, R. Bock, Stefan Borneis, Herbert Brandt, C. Bruske, John Caird, E. Dewald, C. Haefner, D. Hoffmann, Mikhail Kalachnikov, H.-J. Kluge, Ferenc Krausz, Thomas Kuehl, Grant Logan, Dieter Marx, Paul Neumayer, Peter Nickles, M. Perry, K. Poppensieker, Irene Reinhard, Wolfgang Sandner, Roland Sauerbrey, A. Tauschwitz, Ingo Will

Proceedings Volume 4424, (2001) https://doi.org/10.1117/12.425559

KEYWORDS: Ions, Plasma, Pulsed laser operation, Fusion energy, Ion beams, Optical amplifiers, Laser systems engineering, Laser energy, Ion lasers, Laser development

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Proceedings Article | 23 July 1999 Paper

High-energy laser system for HIF research at GSI

M. Roth, R. Bock, U. Funk, Matthias Geissel, D. Hoffmann, Thomas Kuehl, Grant Logan, Jurgen Meyer-ter-Vehn, Peter Nickles, Michael Perry, Wolfgang Seelig, Christian Stoeckl, S. Stoewe, W. Suess

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354205

KEYWORDS: Plasma, Fusion energy, Ions, Laser systems engineering, Ion beams, Plasma generation, Amplifiers, Laser energy, Lead, Plasma physics

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