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Figure 5
Experimental set-up for stacked zone-plate efficiency measurements (top). The dense zone plate was scanned around the common optical axis, while the diffraction efficiency in the first order was recorded. Measured diffraction efficiencies at small misalignments for effective four-level (bottom left) and six-level (bottom right) stacked zone plates with 47.1% and 53.7% diffraction efficiency in their best alignment.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 21| Part 3| May 2014| Pages 497-501
https://doi.org/10.1107/S1600577514003403
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