Extreme Light for Scientificand Societal Applications

Extreme-light laser is a universal source providing a vast range of high energy radiations and particles along
with the highest field, highest pressure, temperature and acceleration. It offers the possibility to shed light on
some of the remaining unanswered questions in fundamental physics like the genesis of cosmic rays with
energies in excess of 1020 eV or the loss of information in black-holes. Using wake-field acceleration some of
these fundamental questions could be studied in the laboratory. In addition extreme-light makes possible the

study of the structure of vacuum and particle production in "empty" space which is one of the field’s ultimate
goal, reaching into the fundamental QED and possibly QCD regimes. Looking beyond today’s intensity horizon,
we will introduce a new concept that could make possible the generation of attosecond-zeptosecond high
energy coherent pulse, de facto in x-ray domain, opening at the Schwinger level, the zettawatt, and PeV
regime; the next chapter of laser-matter interaction.