The combination of CPA technique with the existing high-power solid-state laser facilities for fusion application has created a new generation of lasers. Pulse durations are decreased by three to four orders of magnitude and peak powers are increased by two to three orders of magnitude reaching 100TW and even over 1PW, resulting in enormous intensities of 1021W/cm2. The breakthrough of laser technology has opened an amazing world of physics research. Unexpected phenomena have been observed and possible applications are being explored.