Parabolic single-crystal diamond lenses for coherent x-ray imaging

Terentyev, Sergey; Бланк, В. Д.; Polyakov, S. N.; Zholudev, S. I.; Snigirev, A.; Polikarpov, Maxim; Kołodziej, Tomasz; Qian, Jun; Zhou, Hua; Shvyd’ko, Yuri

doi:10.1063/1.4931357

Cited by 57 publications

(32 citation statements)

References 30 publications

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“…Accompanying these developments are advances in microstructuring of diamond in order to fabricate one-dimensional lenses by ion/plasma etching Nö hammer et al, 2003;Alianelli et al, 2010) and one-and two-dimensional lenses by micromachining via laser ablation Terentyev et al, 2015Terentyev et al, , 2017. Although rapid progress in shape and surface quality has been made, current diamond lenses do not meet the demands of microscopy with nanometer resolution.…”

Section: Introductionmentioning

confidence: 99%

Nanofocusing with aberration-corrected rotationally parabolic refractive X-ray lenses

Seiboth

Wittwer

Scholz

et al. 2018

J Synchrotron Radiat

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Edited by M. Zangrando, IOM-CNR and Elettra-Sincrotrone, ItalyKeywords: refractive X-ray optics; aberration correction; ptychography; phase plate.Nanofocusing with aberration-corrected rotationally parabolic refractive X-ray lenses Wavefront errors of rotationally parabolic refractive X-ray lenses made of beryllium (Be CRLs) have been recovered for various lens sets and X-ray beam configurations. Due to manufacturing via an embossing process, aberrations of individual lenses within the investigated ensemble are very similar. By deriving a mean single-lens deformation for the ensemble, aberrations of any arbitrary lens stack can be predicted from the ensemble with " = 0.034. Using these findings the expected focusing performance of current Be CRLs are modeled for relevant X-ray energies and bandwidths and it is shown that a correction of aberrations can be realised without prior lens characterization but simply based on the derived lens deformation. The performance of aberration-corrected Be CRLs is discussed and the applicability of aberration-correction demonstrated over wide X-ray energy ranges.

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Section: Introductionmentioning

confidence: 99%

Nanofocusing with aberration-corrected rotationally parabolic refractive X-ray lenses

Seiboth

Wittwer

Scholz

et al. 2018

J Synchrotron Radiat

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show abstract

“…However, diamond is very difficult to process because of its hardness. Only recently refractive X-ray lenses with rotational parabolic surfaces have been manufactured out of diamond single-crystals; milling by means of material ablation with ultrafast laser pulses was used to process the diamond (Terentyev et al, 2015). Since then, results of several more trials have been reported, where diamond single-crystal CRLs were used to focus an X-ray beam produced by an undulator source (see also Antipov et al, 2016;Terentyev et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…In all experiments it was found that in the supposed image plane the intensity profile of the beam deviated from the expected figure. However, only general conclusions on the origin of this effect have been reported, such as that aggregate errors in the unit lenses' surface shape, a limited stacking precision, and surface roughness were the sources of imperfections (Terentyev et al, 2015;Antipov et al, 2016). In this work we undertake a detailed study of single-crystal diamond X-ray lenses manufactured by the Technological Institute for Superhard and Novel Carbon Materials (TISNCM) in Troitsk, Russia (Terentyev et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Refraction and ultra-small-angle scattering of X-rays in a single-crystal diamond compound refractive lens

Gasilov¹,

Mittone²,

Rolo³

et al. 2017

J Synchrotron Radiat

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In this work a double-crystal setup is employed to study compound refractive lenses made of single-crystal diamond. The point spread function of the lens is calculated taking into account the lens transmission, the wavefront aberrations, and the ultra-small-angle broadening of the X-ray beam. It is shown that, similarly to the wavefront aberrations, the ultra-small-angle scattering effects can significantly reduce the intensity gain and increase the focal spot size. The suggested approach can be particularly useful for the characterization of refractive X-ray lenses composed of many tens of unit lenses.

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“…Finally, lens depth can be increased from the current 30-50 μm by longer deposition runs. Prototype laser-milled single crystal diamond lenses, with sub-mm acceptance, are being fabricated by several groups [10,11], but have yet not achieved micro-focusing. The availability of large diamond synthetic crystals, of high quality, is probably a few years in the future.…”

Section: Micro-and Nano-crystalline Diamond Lensesmentioning

confidence: 99%