Compact high-resolution differential interference contrast soft x-ray microscopy
2008 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 92, no 064104Article in journal (Refereed) Published
We demonstrate high-resolution x-ray differential interference contrast (DIC) in a compact soft x-ray microscope. Phase contrast imaging is enabled by the use of a diffractive optical element objective which is matched to the coherence conditions in the microscope setup. The performance of the diffractive optical element objective is evaluated in comparison with a normal zone plate by imaging of a nickel siemens star pattern and linear grating test objects. Images obtained with the DIC optic exhibit typical DIC enhancement in addition to the normal absorption contrast. Contrast transfer functions based on modulation measurements in the obtained images show that the DIC optic gives a significant increase in contrast without reducing the spatial resolution. The phase contrast operation mode now available for our compact soft x-ray microscope will be a useful tool for future studies of samples with low absorption contrast.
Place, publisher, year, edition, pages
2008. Vol. 92, no 064104
diffractive optical-elements, zone plates, phase-contrast, fabrication, condenser
IdentifiersURN: urn:nbn:se:kth:diva-9811DOI: 10.1063/1.2842422ISI: 000253237900123ScopusID: 2-s2.0-39349084101OAI: oai:DiVA.org:kth-9811DiVA: diva2:133154
QC 201007282009-01-072009-01-072011-02-21Bibliographically approved