Generation Of The Ultraintense Laser Pulse With An Intensity Of 6x10(22) W/Cm(2)

Wavefront correction of the PW laser system at IBS-GIST (Korea) was successfully performed using double deformable mirror system. Residual wavefront error was 0.071 mu m (RMS) and 0.374 mu m (PV). The wavefront-corrected PW laser beam was focused by an f/1.6 off-axis parabola (450 mm effective focal length). A focal spot size (FWHM) was 1.5 mu m horizontally and 1.8 mu m vertically. Considering the peak power of 3 PW, the focused peak intensity is 6x10(22) W/cm(2), which is the highest intensity ever reached. Thus, it would be possible to achieve the peak intensity over 10(23) W/cm(2) by using an f/1.0 off-axis parabola. (C) 2019 The Author(s)