Stefan Hüller



Senior Scientist ("Directeur de Recherche") CNRS

GDR "LEPICE" Lasers énergétiques et intenses et plasmas sous conditions extrêmes


Address CPHT, Ecole Polytechnique, 91128 Palaiseau cedex, France
Phone number +33-(0)1 69 33 42 32
Office Building 6, office 06.1028

Research activities

My research activities are focussed on laser-matter interaction in the context of laser fusion:

  • Interaction of powerful laser beams with expanding plasmas.
  • Interaction of intense sub-picosecond laser pulses with solid or dense matter under the aspect of laser absorption and hydrodynamics of hot plasmas.

My work is concentrated on the modelling of the interaction of laser beams with expanding plasmas taking into account parametric instabilities, such as self-focusing/filamentation and the stimulated Brillouin and Raman scattering instabilities. Results of our group show important progress in the understanding and the interpretation of these processes in laser-plasma experiments.

In the domain of the interaction of a short laser pulse with a solid-density target I have studied novel harmonic-generation mechanisms. Furthermore I have investigated, as a function of the laser intensity and the laser pulse duration, the state of the matter after the laser pulse, i.e. whether the heated matter can be characterized by a classical plasma in full expansion or by a "hot solid" with still high density.

Short biography:

Selected articles

J. D. Ludwig, S. Hüller, H. A. Rose, C. Bruulsema, W. Farmer, P. Michel, W. Rozmus, A. Milder, G. Swadling, and W. Rozmus  "Shock formation in flowing plasmas by temporally and spatially smoothed laser beams", Phys. Plasmas 31, 032103 (2024).

Mufei Luo, Stefan Hüller, Min Chen, and Zhengming Sheng; Frequency chirp effects on stimulated Raman scattering in inhomogeneous plasmas , Phys. Plasmas 29, 072709 (2022);

Mufei Luo, Stefan Hüller, Min Chen, and Zhengming Sheng;
On the role of bandwidth in pump and seed light waves for stimulated Raman scattering in inhomogeneous plasmas;
Phys. Plasmas 29, 032102 (2022).,

G. Cristoforetti, S. Hüller, P. Koester, L. Antonelli, S. Atzeni, et al.. Observation and modelling of Stimulated Raman Scattering driven by an optically smoothed laser beam in experimental conditions relevant for Shock Ignition. High Power Lasers and Engineering 8, (2021),

Stefan Hüller, Gaurav Raj, Mufei Luo, Wojciech Rozmus, Denis Pesme;
Crossed beam energy transfer between optically smoothed laser beams in inhomogeneous plasmas.
Philosophical Transactions of the Royal Society A 378, 20200038 (2020);

G. Tran, P. Loiseau, A. Fusaro, A. Héron, S. Hüller, L. Maëder, P-E. Masson-Laborde, D. Penninckx, G. Riazuelo 
Fluid modelling of Stimulated Raman Scattering accounting for trapped particles benchmarked against fully kinetic simulations, 
Phys. Plasmas 27, 122707 (2020).; see accepted manuscript

S. Hüller, G. Raj, W. Rozmus, and D. Pesme,
"Crossed beam energy transfer in the presence of laser speckle ponderomotive self-focusing and nonlinear sound waves",
Physics of Plasmas 27, 022703 (2020);

A. Ruocco, G. Duchateau, V.T. Tikhonchuk, S. Hüller,
"Modeling of laser ponderomotive self-focusing in plasma within the Paraxial Complex Geometrical Optics approach";
Plasma Physics and Controlled Fusion 61, 115009 (2019),

S. Hüller, A. Porzio, J.-C. Adam, and A. Héron,
"On the non-thermal nature of distributions of electrons accelerated by high-intensity lasers at the vacuum-plasma interface"
J. D. Ludwig, P.-E. Masson-Laborde, S. Hüller, W. Rozmus, and S. C. Wilks,
"Enhancement and Control of Laser Wakefields via a Backward Raman Amplifier",
Phys. Plasmas 25(5), 053108 (2018),
C. Neuville, K. Glize, P.-E. Masson-Laborde, P. Loiseau, S. Hüller, A. Debayle, C. Baccou, M. Casanova, C. Labaune, and S. Depierreux,

"Polarization modification of a spatially randomized picosecond-pulse beam during its amplification by a nanosecond pump", Phys. Plasmas 24, 112110 (2017).

G. Raj and S. Hüller
"Impact of laser beam speckle structure on crossed beam energy transfer via beam deflections and ponderomotive self-focusing",
Phys. Rev. Lett. 118, 055002 (2017).
C. Neuville, C. Baccou, A. Debayle, P. -E. Masson-Laborde, S. Hüller, M. Casanova, D. Marion, P. Loiseau, K. Glize, C. Labaune, and S. Depierreux, "Spatial and transient effects during the amplification of a picosecond pulse beam by a nanosecond pump", Phys. Rev. Lett. 117, 145001 (2016);

A. Colaïtis, S. Hüller, V. T. Tikhonchuk, D. Pesme, G. Duchateau, and A. Porzio, "Modeling of energy transfer between two crossing smoothed laser beams in a plasma with flow profile", proceedings of IFSA, Seattle 2015, Journal of Physics: Conference Series 717, 012096 (2016), 

A. Colaïtis, S. Hüller, D. Pesme, G. Duchateau, and V. T. Tikhonchuk, 
"Crossed Beam Energy Transfer: assessment of the Paraxial Complex Geometrical Optics approach versus a time-dependent paraxial method to describe experimental results",

Phys. Plasmas 23, 032118 (2016);

S. Hüller and A. Porzio,
"Weibull type speckle distributions as a result of saturation in stimulated scattering processes", 
Laser and Particle Beams 33, 667-678 (2015). weibull08Jun15LPB.pdf

P. E. Masson-Laborde , S. Hüller , D. Pesme , Ch. Labaune , S. Depierreux , P. Loiseau , and H. Bandulet
"Stimulated Brillouin Scattering reduction induced by self-focusing for a single speckle interacting with an expanding plasma",
Physics of Plasmas 21(3), 032703 (2014).

Bedros Afeyan and Stefan Hüller,
"Optimal Control of Laser-Plasma Instabilities Using Spike Trains of Uneven Duration and Delay: STUD Pulses",

T. Chapman, S. Hüller, P.E. Masson-Laborde, A. Héron, W. Rozmus, and D. Pesme 
“The dependence of spatial autoresonance in SRS on k λD”, (IFSA 2011), 
EPJ Web of Conferences 59, 05012 (2013); DOI:

Stefan Hüller and Bedros Afeyan 
“Simulations of drastically reduced SBS with laser pulses composed of a Spike Train of Uneven Duration and Delay (STUD pulses)”, (IFSA 2011), 
EPJ Web of Conferences 59, 05010 (2013); DOI:

Bedros Afeyan and Stefan Hüller 
“Optimal control of laser plasma instabilities using Spike Trains of Uneven Duration and Delay (STUD Pulses) for ICF and IFE”, (IFSA 2011), 
EPJ Web of Conferences 59, 05009 (2013); DOI:

S. Hüller, A. Porzio and J. Robiche,
"Order statistics of high-intensity speckles in stimulated Brillouin scattering and plasma-induced laser beam smoothing"
New Journal of Physics 15, 025003 (2013)

Th. Chapman, S. Hüller, P.E. Masson-Laborde, A. Heron, D. Pesme, and W. Rozmus, 
“Driven spatially autoresonant stimulated Raman scattering in the kinetic regime”, 
Phys. Rev. Lett. 108, 145003 (2012).

R. Ramis, K. Eidmann, J. Meyer-ter-Vehn, and S. Hüller, 
"MULTIFS - A Computer Code for Laser-Plasma Interaction in the Femtosecond Regime". 
Computer Phys. Communications 183, 637-655 (2012),  doi:10.1016/j.cpc.2011.10.016

Th. Chapman, S. Hüller, P.E. Masson-Laborde, W. Rozmus and D. Pesme, 
“Spatially autoresonant stimulated Raman scattering in inhomogeneous plasmas in the kinetic regime”, 
Phys. Plasmas 17(12), 122317 (2010).

S. Hüller, A. Porzio 
“Order statistics and extremal properties of spatially smoothed laser beams”, 
Laser and Particle Beams 28(3), 463-477 (2010).

A. Porzio, S. Hüller 
“Extremal properties for weakly correlated random variables arising in speckle patterns”, 
J. Statist. Phys. 138, 1010 (2010).

L. Lancia, J.-R. Marques, M. Nakatsutsumi, C. Riconda, S. Weber, S. Hüller, et al.,
“Experimental Evidence of Short Light Pulse Amplification Using Strong-Coupling Stimulated Brillouin Scattering in the Pump Depletion Regime”, 
Phys. Rev. Lett. 104, 025001 (2010).

S. Hüller, P.E. Masson-Laborde, D. Pesme, Ch. Labaune, and H. Bandulet
"Modeling of Stimulated Brillouin Scattering in expanding plasmas", 
J. Phys.: Conf. Ser. 112 022031 (2008).

Hüller S., Masson-Laborde P. E., Pesme D., Casanova M., Detering F., Maximov A. 
"Harmonic decomposition to describe the nonlinear evolution of Stimulated Brillouin Scattering". 
Physics of Plasmas 2006; 13: 22703.

P.-E. Masson-Laborde, S. Hüller, D. Pesme, M. Casanova, P. Loiseau
"Modeling parametric scattering instabilities in large-scale expanding plasmas"; 
J. Phys. IV France 133, 247 (2006).

K. Eidmann, J. Meyer-ter-Vehn, T. Schlegel, and S. Hüller
"Hydro code simulation of sub-picosecond laser interaction with solid-density matter"; 
Phys. Rev. E 62(1), 1202 (2000).

S. Hüller
`Stimulated Brillouin scattering off nonlinear ion acoustic waves’; 
Phys. Fluids B 3(12), 3317 (1991).

S. Hüller, P. Mulser and A.M. Rubenchik
Nonstationary stimulated Brillouin scattering’; 
Phys. Fluids B 3(12), 3339 (1991).

`Stimulated Brillouin scattering off nonlinear ion acoustic waves’ ; Phys. Fluids B 3(12), 3317 (1991).

Preprint to Laser and Particle Beams 28, 463-477 (2010)