Scientific Frontiers Opened by Combinative Use of X-ray Free Electron Lasers and Ultra-high Power Lasers

Abstract

X-ray free electron lasers (XFELs) have opened new frontiers in broad research fields because of its unique properties; high brilliance, short pulse-duration, and high spatial coherence. Optical lasers with ultra- high powers have also been applied in variety of scientific fields particularly in high energy density science. Combinative use of XFELs and ultra-high power lasers provides novel capabilities to excite and diagnose ultra- fast phenomena within small spatial scales under extreme conditions.