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Phys Rev Lett. 2010 Jul 23;105(4):043901. Epub 2010 Jul 20.

High-resolution X-ray lensless imaging by differential holographic encoding.

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  • 1Department of Applied Physics, Stanford University, Stanford, California, USA. dlzhu@stanford.edu


We demonstrate in the soft x-ray regime a novel technique for high-resolution lensless imaging based on differential holographic encoding. We have achieved superior resolution over x-ray Fourier transform holography while maintaining the signal-to-noise ratio and algorithmic simplicity. We obtain a resolution of 16 nm by synthesizing images in the Fourier domain from a single diffraction pattern, which allows resolution improvement beyond the reference fabrication limit. Direct comparisons with iterative phase retrieval and images from state-of-the-art zone-plate microscopes are presented.

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