Dr. Götz Alexander Lehmann

Institut für Theoretische Physik I

Universitätsstraße 1
Building 25.32., Room 01.43
40225 Düsseldorf

Germany

Phone: +49-(0)-211-8112015
Fax: +49-(0)-211-8115194

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Research interests

I am working in theoretical plasma physics, with special focus on relativistic laser-plasma interaction.
Of special interest to me are

  • Plasma-based photonic structures
  • Amplification of short, relativistic laser pulses in plasma via stimulated Raman and Brillouin processes,
  • Radiation damping in ultra-relativistic laser-plasma interaction,
  • Dynamics and stability of solitary structures in laser-plasma interactions,
  • Laser pulse self-compression via plasma non-linearities,
  • Numerical simulations of Maxwell-Fluid and Maxwell-Vlasov models.

 

Teaching

I enjoy teaching, even though when properly done it will consume a lot of time. I am particularly happy that
my lectures Numerical Simulations I/II found such a good resonance amongst the students, that I was eventually
given a teaching award from the university in 2014. Thank you to all the students who put my nomination for
this forward and supported it. You can find more about the award following this link (in german).

Numerische Simulationen I, WS 2010/11
Numerische Simulationen II, SS 2011
Numerische Simulationen I, WS 2011/12
Numerische Simulationen II, SS 2012
Vorkurs Mathematik fuer Physiker, WS 2012
Numerical Simulations I WS 2012/2013
Numerical Simulations II, SS 2013
Vorkurs Mathematik fuer Physiker, WS 2013
Numerical Simulations I, WS 2013/14
Numerical Simulations II, SS 2014
Vorkurs Mathematik fuer Physiker, WS 2013
Physik fuer Pharmazeuten, WS 2014/2015
Numerical Simulations I, SS 2015
Computational Physics, WS 2015/2016
Numerical Simulations I, SS 2016
Physik für Biologen, WS 2017/18
Numerical Simulations II, WS 2017/18

 

Peer-reviewed publications

Parametric pulse amplification by acoustic quasimodes in electron-positron plasmas,
Phys. Rev. E 96, 053204 (2017),
F. Schluck, G. Lehmann, and K.H. Spatschek

Laser-driven plasma photonic crystals for high-power lasers,
Phys. Plasmas 24, 056701 (2017),
G. Lehmann and K.H. Spatschek

Dynamical transition from weakly to strongly couples Brillouin backscattering
during laser seed pulse amplification,
Phys. Plasmas 23, 0832015 (2016),
F. Schluck, G. Lehmann, C. Müller, and K.H. Spatschek

Broadband Stimulated Raman Backscattering,
New J. Phys. 18, 073048 (2016)
B. Landgraf, B. Aurand, G. Lehmann, T. Gangolf, M. Schnell, T. Kuehl, and C. Spielmann

Transient plasma photonic crystals for high-power lasers,
Phys. Rev. Lett. 116, 225002 (2016)
G. Lehmann and K.H. Spatschek

Efficient semi-Lagrangian Vlasov-Maxwell simulations of high order harmonic
generation from relativistic laser-plasma interactions,
Commun. Comput. Phys. 20, 583 (2016),
G. Lehmann

Temperature dependence of seed pulse amplitude and density grating
in Brillouin amplification,
Phys. Plasmas 23, 023107 (2016),
G. Lehmann and K.H. Spatschek

Amplification of a seed pumped by a chirped laser in the strong coupling Brillouin regime,
Phys. Plasmas 22, 093104 (2015),
F. Schluck, G.Lehmann, and K.H. Spatschek

Control of Brillouin short-pulse seed amplification by chirping the pump pulse,
Phys. Plasmas 22, 043105 (2015),
G. Lehmann and K.H. Spatschek

The behavior of the electron plasma boundary in ultraintense
laser–highly overdense plasma interaction,
Phys. Plasmas 21, 123107 (2014),
G.Sánchez-Arriaga, J. Sanz, A. Debayle, and G. Lehmann

Amplification of ultra-short light pulses by ion collective modes in plasmas
- The use of damage-less optics for high laser intensities
Eur. Phys. J. Special Topics 223, 1153 (2014),
A. Frank, J. Fuchs, L. Lancia, G. Lehmann, J.-R. Marquès, G. Mourou,
C. Riconda, K.H. Spatschek, T. Toncian, L. Vassura, S. Weber, and O. Willi

Non-filamentated ultra-intense and ultra-short pulse fronts in
three-dimensional Raman seed amplification
Phys. Plasmas 21, 053101 (2014), G. Lehmann and K.H. Spatschek

Nonlinear Brillouin amplification of finite-duration seeds in the strong coupling regime
Phys. Plasmas 20, 073112 (2013), G.Lehmann and K.H.Spatschek

Pulse shaping during Raman-seed amplification for short laser pulses
Phys. Rev. E. 87, 063107 (2013), G. Lehmann, G. Sewell, and K.H. Spatschek

Regions for Brillouin seed pulse growth in relativistic laser-plasma interaction,
Phys. Plasmas 19, 093120 (2012) ,G. Lehmann, F. Schluck, and K.H. Spatschek

Phase-space contraction and attractors for ultra-relativistic electrons,
Phys. Rev. E 85, 056412 (2012) , G. Lehmann and K.H. Spatschek

Energy gain of an electron by a laser pulse in the presence of radiation reaction,
Phys. Rev. E 84, 046409 (2011) , G. Lehmann and K.H. Spatschek

Poincare analysis of wave motion in ultra-relativistic electron-ion plasmas,
Phys. Rev. E 83, 036401 (2011), G. Lehmann and K.H. Spatschek

Classification and stability of plasma motion in periodic linearly polarized relativistic waves,
Phys. Plasmas 17, 072102 (2010) , G. Lehmann and K.H. Spatschek

Two-dimensional dynamics of relativistic solitons in cold plasmas,
Phys. Plasmas 15, 072307 (2008) , G. Lehmann, E.W. Laedke, and K.H. Spatschek

Localized wake-field excitation and relativistic wave-breaking ,
Phys. Plasmas 14, 103109 (2007) , G. Lehmann, E.W. Laedke, and K.H. Spatschek

Stability and evolution of one-dimensional relativistic solitons on the ion time-scale,
Phys. Plasmas 13, 092302 (2006), G. Lehmann, E.W. Laedke, and K.H. Spatschek

 


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