Optimum design of laser-driven-monochromatic X-ray backlighting system

Theoretical expressions for the key performance parameters(spatial resolution and imaging efficiency, et al) of a laser-driven-monochromatic X-ray backlighting system were deduced and the relationship beteween these parameters were analyzed when the optical parameters varied. An optimum design method for the system was then proposed based on the maxmum of the spatial resolution ability with the constraint of obtaining a well image(the exposure intensity is greater than the sensitivity of the detector). Two backlighting systems with photon energy of 5.07 keV and 5.41 keV were designed using this method and the ray tracing results show that both systems can achieve a spatial resolution smaller than 10 μm in about 1 cm2 field of view.