High Field Plasmonics
This thesis describes pioneering research on the extension of plasmonics schemes to the regime of high-intensity lasers. By presenting a rich and balanced mix of experimentation, theory and simulation, it provides a comprehensive overview of the emerging field of high field plasmonics, including open issues and perspectives for future research. Combining specially designed targets and innovative materials with ultrashort, high-contrast laser pulses, the author experimentally demonstrates the effects of plasmon excitation on electron and ion emission. Lastly, the work investigates possible further developments with the help of numerical simulations, revealing the potential of plasmonics effects in the relativistic regime for advances in laser-driven sources of radiation, and for the manipulation of extreme light at the sub-micron scale.
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3 Numerical Tools
4 Electron Acceleration with Grating Targets
5 Foam Targets for Enhanced Ion Acceleration
6 Numerical Exploration of High Field Plasmonics in Different Scenarios
7 Conclusions and Perspectives
Appendix A Code Normalization
Appendix B ParticleInCell algorithm
2D simulations angles of incidence astrophysical attosecond beam CEA-Saclay Ceccotti cut-off energy electric field electromagnetic electron acceleration electron bunches electron density electron spectrometer emission enhancement equation experimental campaign FDTD Fedeli femtosecond field component foam foam-attached targets foil grid Gwangju High Field Plasmonics high intensity intense laser ion acceleration irradiated Lanex screen laser facility laser intensities laser interaction laser pulse laser systems laser-based laser-driven laser-matter interaction laser-plasma interaction Lett Macchi metamaterial mirror MPI tasks neutron numerical simulations obtained output P-polarization parabola parameters Particle-In-Cell Passoni peak Pegoraro Phys physical PIC codes plasma Plasma Physics plasmonic effects polarization Prencipe propagation protons pulse incidence pulsed laser deposition radiation pressure radiation pressure acceleration Radiation Reaction Rayleigh–Taylor instability relativistic resonance angle scenarios Sgattoni simple flat targets simulation box Sinigardi solid targets spectra spectrometer specular reflection structures target surface target tangent thickness TNSA ultra-high intensity