Abstract An efficient method to achieve high spatial coherence of laboratory soft-X-ray laser is presented, in which a pinhole can be used in "four-target series coupling" experiment to obtain a fully coherent X-ray laser. The model of amplified spontaneous emission is used to describe the characteristics and spatial coherence properties of a soft-X-ray laser beam. The simulation results show that the method is feasible.
Received: 04 July 1996
Accepted manuscript online:
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