Generation of the Ultraintense Laser Pulse with an Intensity of 6 ⨯ 1022W/Cm2

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 μm (RMS)and 0.374 μm (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 μm horizontally and 1.8 μm vertically. Considering the peak power of 3 PW, the focused peak intensity is 6 ⨯ 10
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. © 2019 The Author(s)