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Singleshot polychromatic coherent diffractive imaging with a high-order harmonic source
- Publication Year :
- 2020
- Publisher :
- Technische Universität Berlin, 2020.
-
Abstract
- © 2020 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. Singleshot polychromatic coherent diffractive imaging is performed with a high-intensity high-order harmonic generation source. The coherence properties are analyzed and several reconstructions show the shot-to-shot fluctuations of the incident beam wavefront. The method is based on a multi-step approach. First, the spectrum is extracted from double-slit diffraction data. The spectrum is used as input to extract the monochromatic sample diffraction pattern, then phase retrieval is performed on the quasi-monochromatic data to obtain the sample’s exit surface wave. Reconstructions based on guided error reduction (ER) and alternating direction method of multipliers (ADMM) are compared. ADMM allows additional penalty terms to be included in the cost functional to promote sparsity within the reconstruction.
- Subjects :
- Diffraction
Wavefront
Physics
business.industry
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Physics::Optics
X-ray optics
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Atomic and Molecular Physics, and Optics
Ptychography
010309 optics
Optics
0103 physical sciences
High harmonic generation
ddc:530
Monochromatic color
0210 nano-technology
Phase retrieval
business
Coherence (physics)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....b6a9b3e79cc3e1773249c78198e88b32