In this contribution, we present a scanning coherent diffractive imaging (i.e. ptychography) microscope operating in the EUV. Coherent EUV radiation at 13.5 nm is generated by high-order harmonic generation using a high-power fiber laser system. Utilizing structured illumination, a highly stable EUV source and ptychography setup sub 20 nm half-pitch resolution is demonstrated on a resolution test chart. Moreover, the lamella of an integrated structure is investigated and its contained materials are identified using the measured quantitative amplitude and phase.
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