Progress and Prospects of Coherent X-Ray Research Using High Power Lasers in Japan Atomic Energy Agency

Recent progress of the coherent x-ray research using the transient collisional excitation (TCE) laser and higher-order harmonics from relativistic plasmas is reviewed. We also describe the future prospects of this research field in JAEA which involve short wavelength coherent x-ray generation using a petawatt class driver laser and application studies using high average power TCE laser.