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arXiv · 1802.07630

Diffractive shear interferometry for extreme ultraviolet high-resolution lensless imaging

G. S. M. Jansen·A. C. C. de Beurs·X. Liu·K. S. E. Eikema·S. Witte
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Abstract

We demonstrate a novel imaging approach and associated reconstruction algorithm for far-field coherent diffractive imaging, based on the measurement of a pair of laterally sheared diffraction patterns. The differential phase profile retrieved from such a measurement leads to improved reconstruction accuracy, increased robustness against noise, and faster convergence compared to traditional coherent diffractive imaging methods. We measure laterally sheared diffraction patterns using Fourier-transform spectroscopy with two phase-locked pulse pairs from a high harmonic source. Using this approach, we demonstrate spectrally resolved imaging at extreme ultraviolet wavelengths between 28 and 35 nm.

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G. S. M. Jansen, A. C. C. de Beurs, X. Liu, K. S. E. Eikema, S. Witte. 2018-02-21. Diffractive shear interferometry for extreme ultraviolet high-resolution lensless imaging. https://doi.org/10.1364/oe.26.012479

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