Maxwell-Bloch modeling of x-ray-laser-signal buildup in single- and double-pass configurations - art. no. 043815

A theoretical model of soft x-ray lasers in hot laser-produced plasmas usin g a Maxwell-Bloch formalism has been developed and implemented in a numeric al code (COLAX). First simulation results in the case of Ne-like Zn from so lid targets are presented, including spontaneous emission generation and am plification, refraction, saturation, and coherence properties. A detailed s imulation is presented of the effect on amplification and coherence of doub le-passing the radiation in the amplifying medium by using a half-cavity mi rror.