Abstract
The field of laser-matter interaction has branched out in two main
directions. The first, motivated by laser inertial confinement fusion,
warm-dense-matter, fast ignition and astrophysics in laboratory,
and the second driven by ultra-high intensity, exotic physics, high-energy
particle, photon beam generation and time-resolved attosecond (zeptosecond)
science. The degree of maturity from both experimental and theoretical
stand-points is such that a large European infrastructure for each
branch is contemplated as part of the European Roadmap. The first
one, HiPER-PETAL will be dedicated to fast ignition with the aim
of obtaining a thermonuclear gain of 100, whereas the second, Extreme
Light Infrastructure (ELI) could go beyond the relativistic regime
to foray into the ultra-relativistic domain > 10(24) W cm(-2). In
this paper we highlight the intriguing perspectives that these two
projects will offer.
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