We demonstrate Zernike phase contrast in a compact soft x-ray microscope using a single-element optic. The optic is a combined imaging zone plate and a Zernike phase plate and does not require any additional alignment or components. Contrast is increased and inversed in an image of a test object using the Zernike zone plate. This type of optic may be implemented into any existing x-ray microscope where phase contrast is of interest.
© 2008 Optical Society of America
Original Manuscript: December 20, 2007
Manuscript Accepted: March 14, 2008
Published: April 23, 2008
Vol. 3, Iss. 6 Virtual Journal for Biomedical Optics
O. von Hofsten, M. Bertilson, M. Lindblom, A. Holmberg, and U. Vogt, "Compact Zernike phase contrast x-ray microscopy using a single-element optic," Opt. Lett. 33, 932-934 (2008)