Open AccessImpact of wave front and coherence optimization in coherent diffractive imaging
Author(s) -
X. Ge,
Willem Boutu,
David Gauthier,
F. Wang,
A. Borta,
B. Barbrel,
Mathieu Ducousso,
A. I. Gonzalez,
B. Carré,
D. Guillaumet,
M. Perdrix,
O. Gobert,
J. Gautier,
Guillaume Lambert,
Filipe R. N. C. Maia,
János Hajdu,
Philippe Zeitoun,
H. Merdji
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.011441
Subject(s) - optics , wavefront , coherence (philosophical gambling strategy) , phase retrieval , laser , femtosecond , image quality , diffraction , physics , ptychography , laser beam quality , coherent diffraction imaging , single shot , laser beams , image (mathematics) , computer science , fourier transform , quantum mechanics , artificial intelligence
We present single shot nanoscale imaging using a table-top femtosecond soft X-ray laser harmonic source at a wavelength of 32 nm. We show that the phase retrieval process in coherent diffractive imaging critically depends on beam quality. Coherence and image fidelity are measured from single-shot coherent diffraction patterns of isolated nano-patterned slits. Impact of flux, wave front and coherence of the soft X-ray beam on the phase retrieval process and the image quality are discussed. After beam improvements, a final image reconstruction is presented with a spatial resolution of 78 nm (half period) in a single 20 fs laser harmonic shot.