Spatial coherence measurement of X-ray undulator radiation

Paterson, David; Allman, B. E.; McMahon, P. J.; Lin, Jiao; Moldovan, N.; Nugent, Keith A.; McNulty, Ian; Chantler, Christopher T.; Retsch, Cornelia C.; Irving, Thomas H. K.; Mancini, Derrick C.

doi:10.1016/s0030-4018(01)01276-7

Cited by 93 publications

(52 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…, where IðrÞ ¼ Àðr; rÞ is the intensity at r. This type of experiment is now currently made possible with the progress in nanotechnologies (Paterson et al, 2001;Leitenberger et al, 2003;Tran et al, 2005;Pietsch et al, 2005) because high-quality holes of micrometre sizes are necessary. An interferometric method was used in order to obtain a direct measurement of Vðr 1 ; r 2 Þ (Pfeiffer et al, 2005).…”

Section: =2mentioning

confidence: 99%

Diffraction with a coherent X-ray beam: dynamics and imaging

Livet

2007

Acta Cryst Sect A

View full text Add to dashboard Cite

Methods for carrying out coherent X‐ray scattering experiments are reviewed. The brilliance of the available synchrotron sources, the characteristics of the existing optics, the various ways of obtaining a beam of controlled coherence properties and the detectors used are summarized. Applications in the study of the dynamics of speckle patterns are described. In the case of soft condensed matter, the movement of inclusions like fillers in polymers or colloidal particles can be observed and these can reflect polymer or liquid‐crystal fluctuations. In hard condensed‐matter problems, like phase transitions, charge‐density waves or phasons in quasicrystals, the study of speckle fluctuations provides new time‐resolved methods. In the domain of lensless imaging, the coherent beam gives the modulus of the sample Fourier transform. If oversampling conditions are fulfilled, the phase can be obtained and the image in the direct space can be reconstructed. The forthcoming improvements of all these techniques are discussed.

show abstract

Section: =2mentioning

confidence: 99%

Diffraction with a coherent X-ray beam: dynamics and imaging

Livet

2007

Acta Cryst Sect A

View full text Add to dashboard Cite

show abstract

“…Partial coherence may cause artifacts in the image reconstructions and limits the spatial resolution (Vartanyants & Robinson, 2001;Williams et al, 2007;Whitehead et al, 2009;Chen et al, 2012;Thibault & Menzel, 2013). The most direct strategy to determine the spatial coherence of soft X-rays from synchrotron sources is to perform a set of Young's double-slit experiments with different separations between the slits (Chang et al, 2000;Paterson et al, 2001). At the same time, the approach of coherence characterization by non-redundant arrays (NRAs) recently applied to X-rays (Skopintsev et al, 2014) offers a fast and reliable method to obtain the spatial coherence properties of synchrotron radiation from a single measurement.…”

Section: Introductionmentioning

confidence: 99%

Water window ptychographic imaging with characterized coherent X-rays

et al. 2015

View full text Add to dashboard Cite

A ptychographical coherent diffractive imaging experiment in the water window with focused soft X-rays at 500 eV is reported. An X-ray beam with high degree of coherence was selected for ptychography at the P04 beamline of PETRA III synchrotron radiation source. The beam coherence was measured with the newly developed non-redundant array method, and a coherence length of 4.1 mm and global degree of coherence of 35% at 100 mm exit slit opening in the vertical direction were determined. A pinhole, 2.6 mm in size, selected the coherent part of the beam that was used to obtain ptychographic reconstruction results of a lithographically manufactured test sample and a fossil diatom. The achieved resolution was 53 nm for the test sample and was only limited by the size of the detector. The diatom was imaged at a resolution better than 90 nm.

show abstract

“…Based on these observations and well understood scaling of undulator radiation, it is evident that high average power, spatially coherent radiation is available at modern storage rings with the use of appropriate pinhole spatial filtering techniques. The ability of synchrotron facilities to provide high spatial coherence at hard x-ray region has recently been confirmed as expected [32,47].…”

Section: Resultsmentioning

confidence: 78%

“…The experimental studies of the optical coherence properties of EUV/SXR optical systems are all fairly recent. Indeed, demonstrations of the ability to accurately measure [9,32] and control [33,34] the degree of coherence have only been published very recently. This dissertation describes the first short-wavelength Thompson-Wolf two-pinhole characterization of the spatial coherence properties of undulator radiation and confirms the anticipated coherence at these very short wavelengths.…”

Section: Coherencementioning

confidence: 99%

Coherence techniques at extreme ultraviolet wavelengths

Chang

2002

View full text Add to dashboard Cite

Spatial coherence measurement of X-ray undulator radiation

Cited by 93 publications

References 18 publications

Diffraction with a coherent X-ray beam: dynamics and imaging

Diffraction with a coherent X-ray beam: dynamics and imaging

Water window ptychographic imaging with characterized coherent X-rays

Coherence techniques at extreme ultraviolet wavelengths

Contact Info

Product

Resources

About