High-resolution X-ray lensless imaging by differential holographic encoding.
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.
Zhu
Diling
D
Department of Applied Physics, Stanford University, Stanford, California, USA. dlzhu@stanford.edu
Guizar-Sicairos
Manuel
M
Wu
Benny
B
Scherz
Andreas
A
Acremann
Yves
Y
Tyliszczak
Tolek
T
Fischer
Peter
P
Friedenberger
Nina
N
Ollefs
Katharina
K
Farle
Michael
M
Fienup
James R
JR
Stöhr
Joachim
J