Multifacet Role of Relativistic Transparency in Laser-plasma Interactions

David J. Stark, University of Texas, Austin
January 22, 1:30 - 2:30pm, EBUII 479

   

Abstract:  

The nature of how light interacts with plasma is fundamentally altered when the bulk of the electrons become relativistic, resulting in an enhanced trans-parency. In this talk I will present three novel aspects of this phenomenon: 1) the polarization-dependent critical threshold in an anisotropic distribution; 2) the extended pulse propagation through an overcritical target, facilitating the generation of a collimated, high-yield multi-MeV photon beam; and 3) the shaping of the critical surface in a plasma mirror leading to the focusing of a laser beam. Using fully self-consistent 2D and 3D particle-in-cell simulations to demonstrate these features, I show how relativistic transparency depends both on how the energy is partitioned between di_erent degrees of freedom and on the amplitude of the laser pulse itself.

Contact Us

P: (858) 534-6527
F: (858) 534-7716

Hours: 9:00am-5:00pm M-F

9500 Gilman Drive #0417
La Jolla, California 92093-0417

We are located in SERF 209, directly East of the Price Center. We also have offices on the 4th floor of EBU-II.