Highest proton energies from laser-plasma-accelerators

The quest for the highest achievable proton energy using compact laser-plasma-accelerators was triggered by early experiments at the Livermore National Lab (USA) [1].
The aim is to accelerate protons or heavier ions with compact, all optical laser-plasma-accelerators, because they could enable novel, stunning applications.
Since the invention of the laser, the maximum achievable laser intensity has seen a dramatic increase, nowaday surpassing 10²¹ W/cm². With this intensity, ions become immediatly stripped of their much lighter electrons, which then pull the ions behind.
The whole process takes only a few hundred femtoseconds and can accelerate protons to 150 MeV (equivalent to a penetration depth in water of 16 cm):

Maximum proton energy from selected laser facilities