Condenser for koehler-like illumination in transmission x-ray microscopes at undulator sources

We report on a novel condenser for full-field transmission x-ray microscopes that use synchrotron radiation from an undulator source. The condenser produces a Koehler-like homogeneous intensity distribution in the sample plane and eliminates object illumination problems connected with the high degre...

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Bibliographic Details
Published in:Optics letters 2006-05, Vol.31 (10), p.1465-1467
Main Authors: VOGT, Ulrich, LINDBLOM, Magnus, CHARALAMBOUS, Pambos, KAULICH, Burkhard, WILHEIN, Thomas
Format: Article
Language:English
Subjects:
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Physics
X- and γ-ray instruments and techniques
X-ray microscopes
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Summary:We report on a novel condenser for full-field transmission x-ray microscopes that use synchrotron radiation from an undulator source. The condenser produces a Koehler-like homogeneous intensity distribution in the sample plane and eliminates object illumination problems connected with the high degree of spatial coherence in an undulator beam. The optic consists of a large number of small linear diffraction gratings and is therefore relatively easy to manufacture. First imaging experiments with a prototype condenser were successfully performed with the Twinmic x-ray microscope at the Elettra synchrotron facility in Italy.
ISSN:0146-9592
1539-4794
1539-4794
DOI:10.1364/OL.31.001465