Denis PESME

Senior Scientist ("Directeur de Recherche Emerite") at CNRS

Research interests

Laser-Plasma interaction in the nanosecond regime corresponding to the Megajoule laser:

• Fundamental studies concerning nonlinear plasma physics: 

Domain boundaries of the "fluid-like" and "kinetic" regimes for a longitudinal wave (Langmuir wave and ion acoustic wave). 
Instability of an ion acoustic wave.

• Nonlinear saturation mechanisms of parametric instabilitities at the microscopic scale. 

*Studies concerning the nonlinear saturation mechanisms of the Stimulated Brillouin Scattering, taking into account harmonics generation and kinetic effects (modelled by means of a nonlinear frequency shift). Brillouin scattering reflectivity scaling law in the fluid-like regimes.

*Studies concerning the nonlinear saturation mechanisms of the Stimulated Raman Scattering in the fluid-like regimes, taking into account the coupling of the Langmuir waves with the ion acoustic waves (IAW) via the Zakharov equations. Demonstration of the existence of two distinct regimes: the LDI (Langmuir Decay Instability) regime and the cavitation/collapse regime. Raman scattering reflectivity scaling law in the LDI regime. Demonstration of the loss of gradient stabilization, this loss resulting from the generation of IAWs caused by the coupling of the Langmuir waves with the IAWs.

• Fluid-type numerical codes development. 

Development of the 2D numerical code "Harmony" describing the nonlinear evolution of the Stimulated Brillouin Scattering, coupled with self-focusing, and taking into account non-local effects. 
Development of a 2D numerical code describing the nonlinear evolution of the Stimulated Raman Scattering, coupled with self-focusing, and taking into account the coupling of the Langmuir waves with the ion acoustic waves via the Zakharov equations.

• Interpretation of experimetns carried out at the LULI laboratory.

Latest publications

S. Depierreux, D. Pesme, R. Wrobel, D. T. Michel, P. -E. Masson-Laborde, G. Riazuelo, E. Alozy, N. Borisenko, A. Orekhov, M. Casanova, A. Casner, M. Grech, A. Heron, S. Huller, P. Loiseau, C. Meyer, P. Nicolaï, C. Riconda, V. Tikhonchuk, and C. Labaune, "Experimental investigation of the interplay between optical and plasma smoothing induced on a laser megajoule beamline", Phys. Rev. Research 5, 043060 (2023); DOI: 10.1103/PhysRevResearch.5.043060

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); http://dx.doi.org/10.1098/rsta.2020.0038; https://hal.archives-ouvertes.fr/hal-02880936

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); https://aip.scitation.org/doi/10.1063/1.5125759

Laval G, Pesme D, Adam JC.
Wave-particle and wave-wave interactions in hot plasmas: a French historical point of view.
The European Physical Journal H. 2018;43(4-5):421-58.
DOI: 10.1140/epjh/e2016-70050-2.

Colaïtis A, Hüller S, Tikhonchuk VT, Pesme D, Duchateau G, Porzio A.
Modeling of energy transfer between two crossing smoothed laser beams in a plasma with flow profile.
In: Proceedings of IFSA, Seattle 2015,  Journal of Physics:
Conference Series 717, 012096 (2016),  http://iopscience.iop.org/article/10.1088/1742-6596/717/1/012096/pdf 2016; 2016.

Colaïtis A, Hüller S, Tikhonchuk VT, Pesme D, Duchateau G.
Crossed Beam Energy Transfer: assessment of the Paraxial Complex Geometrical Optics approach versus a time-dependent paraxial method to describe experimental results.
Physics of Plasmas 2016;23:032118.

Depierreux SN, C., Baccou C, Tassin V, Casanova M, Masson-Laborde PE, Borisenko NG, et al.
Experimental Investigation of the Collective Raman Scattering of Multiple Laser Beams in Inhomogeneous Plasmas.
Physical Review Letters 2016;117(23):235002.
DOI: 10.1103/PhysRevLett.117.235002

Loiseau P, Masson-Laborde P-E, Teychenné D, Monteil M-C, Casanova M, Marion D, Tran G, Huser G, Rousseaux S, Hüller S, Héron A, Pesme D
Simulation of laser-plasma interaction experiments with gas-filled hohlraums on the LIL facility.
Journal of Physics: Conference Series 2016;688:012059.
doi:10.1088/1742-6596/688/1/01

Neuville C, Tassin V, Pesme D, Monteil MC, Masson-Laborde PE, Baccou C, et al.
Experimental Evidence of the Collective Brillouin Scattering of Multiple Laser Beams Sharing Acoustic Waves.
Physical Review Letters 2016;116(23):235002.
DOI: 10.1103/PhysRevLett.116.235002

Naseri N, Rozmus W, Pesme D.
Self-channelling of intense laser pulses in underdense plasma and stability analysis.
Phys. Plasmas 2016;23(11):113101.
DOI: 10.1063/1.4966560