Diffractive shear interferometry for extreme ultraviolet high-resolution lensless imaging

G. S.M. Jansen, A. de Beurs, X. Liu, K. S.E. Eikema, S. Witte*

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

We demonstrate a novel imaging approach and associated reconstruction algorithm for far-field coherent di ractive imaging, based on the measurement of a pair of laterally sheared di raction patterns. The di erential phase profile retrieved from such a measurement leads to improved reconstruction accuracy, increased robustness against noise, and faster convergence compared to traditional coherent di ractive imaging methods. We measure laterally sheared di raction 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.

Original languageEnglish
Pages (from-to)12479-12489
Number of pages11
JournalOptics Express
Volume26
Issue number10
DOIs
Publication statusPublished - 14 May 2018

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