世界最短波長原子準位レーザーの実現

抄録

Present shortest wavelength of the atomic resonant laser reaches to be 1.5A. This length is beyond the lattice constant of many condensed matter and the photon energy exceed up to 8 keV, which is photoionization energy of the first transition metal. Here, the development of this inner shell excitation Kα laser is mentioned with fundamental model to consider the threshold condition of this laser oscillation. In addition, new mode selection method in hard x-ray laser is introduced. The present research activities related to such ultra-high intense x-ray filed becomes high and we consider it is good opportunity to consider future science with these new lasers.