scholarly journals High-Efficiency Gold Fresnel Zone Plates for Multi-keV X-rays

2011 ◽  
Author(s):  
S. Gorelick ◽  
J. Vila-Comamala ◽  
V. A. Guzenko ◽  
R. Barrett ◽  
M. Salomé ◽  
...  
Keyword(s):  
High Efficiency ◽  
Fresnel Zone ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
Zone Plates

scholarly journals High-efficiency zone-plate optics for multi-keV X-ray focusing

2014 ◽  
Vol 21 (3) ◽  
pp. 497-501 ◽  
Author(s):  
Istvan Mohacsi ◽  
Petri Karvinen ◽  
Ismo Vartiainen ◽  
Vitaliy A. Guzenko ◽  
Andrea Somogyi ◽  
...  
Keyword(s):  
Optical Transmission ◽  
High Efficiency ◽  
Fresnel Zone ◽  
Transmission Function ◽  
Zone Plate ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
X Ray ◽  
Zone Plates ◽  
The Ideal

High-efficiency nanofocusing of hard X-rays using stacked multilevel Fresnel zone plates with a smallest zone width of 200 nm is demonstrated. The approach is to approximate the ideal parabolic lens profile with two-, three-, four- and six-level zone plates. By stacking binary and three-level zone plates with an additional binary zone plate, the number of levels in the optical transmission function was doubled, resulting in four- and six-level profiles, respectively. Efficiencies up to 53.7% focusing were experimentally obtained with 6.5 keV photons using a compact alignment apparatus based on piezoelectric actuators. The measurements have also been compared with numerical simulations to study the misalignment of the two zone plates.

High-resolution high-efficiency multilayer Fresnel zone plates for soft and hard x-rays

2015 ◽  
Author(s):  
Umut T. Sanli ◽  
Kahraman Keskinbora ◽  
Keith Gregorczyk ◽  
Jonas Leister ◽  
Nicolas Teeny ◽  
...  
Keyword(s):  
High Resolution ◽  
High Efficiency ◽  
Fresnel Zone ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
Zone Plates

scholarly journals High-efficiency Fresnel zone plates for hard X-rays by 100 keV e-beam lithography and electroplating

2011 ◽  
Vol 18 (3) ◽  
pp. 442-446 ◽  
Author(s):  
Sergey Gorelick ◽  
Joan Vila-Comamala ◽  
Vitaliy A. Guzenko ◽  
Ray Barrett ◽  
Murielle Salomé ◽  
...  
Keyword(s):  
High Efficiency ◽  
Fresnel Zone ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
Zone Plates

High resolution fresnel zone plates for soft x-rays

1994 ◽  
Vol 23 (1-4) ◽  
pp. 101-104 ◽  
Author(s):  
M. Baciocchi ◽  
R. Maggiora ◽  
M. Gentili
Keyword(s):  
High Resolution ◽  
Fresnel Zone ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
Zone Plates

Recent advances in use of atomic layer deposition and focused ion beams for fabrication of Fresnel zone plates for hard x-rays

2013 ◽  
Author(s):  
Kahraman Keskinbora ◽  
Anna-Lena Robisch ◽  
Marcel Mayer ◽  
Corinne Grévent ◽  
Adriana V. Szeghalmi ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Fresnel Zone ◽  
Atomic Layer ◽  
Ion Beams ◽  
Focused Ion Beams ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
Zone Plates ◽  
Recent Advances ◽  
Layer Deposition

Focusing high energy X-rays with stacked Fresnel zone plates

2007 ◽  
Vol 204 (8) ◽  
pp. 2817-2823 ◽  
Author(s):  
I. Snigireva ◽  
A. Snigirev ◽  
V. Kohn ◽  
V. Yunkin ◽  
M. Grigoriev ◽  
...  
Keyword(s):  
Fresnel Zone ◽  
High Energy ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
Zone Plates

scholarly journals X-ray picture of the Sun taken with Fresnel zone plates

1968 ◽  
Vol 35 ◽  
pp. 439-443
Author(s):  
G. Elwert
Keyword(s):  
Fresnel Zone ◽  
Focal Length ◽  
Brightness Distribution ◽  
Resolving Power ◽  
X Rays ◽  
Applied Physics ◽  
Fresnel Zone Plates ◽  
Zone Plates ◽  
The One ◽  
The Individual

It is well known that Fresnel zone plates act as a lens with a focal length inversely proportional to the wavelength. At Professor Moellenstedt's Institute of Applied Physics in Tübingen, a technique has been developed to manufacture micro-zone plates electronoptically from Buckbee-Mears zone plates. These micro-zone plates have a diameter of 0·5 mm approximately, 38 zones and a focal length of 30 cm for X-rays of nearly 50 Å. Their resolving power is of the order of a few seconds of arc (Einighammer et al., 1966). One finds, however, experimentally as well as theoretically that the sharply defined image is surrounded by a halo having a diameter of a few minutes of arc for the above-mentioned zone plates. Whereas for a point source the intensity of a halo is poor and therefore unimportant, for extended sources it becomes large as a result of the superposition of the contributions from the individual points of the source. This has been demonstrated by the photometer curves of the images of circular sources by Einighammer (1966) (Figure 1). The halo is not noticeable in case of very narrow sources (curves a and b). With increasing diameter of the source the intensity of the halo rapidly increases (curves c and d). For the same source the brightness distribution of the halo agrees practically with the one obtained by a pinhole camera, provided the diameter of the hole and that of the zone plate are equal; these brightness distributions are represented by the dashed lines c′ d′ in Figure 1.

Stacked Fresnel Zone Plates for High Energy X-rays

2007 ◽  
Author(s):  
Irina Snigireva ◽  
Anatoly Snigirev ◽  
Gavin Vaughan ◽  
Marco Di Michiel ◽  
Viktor Kohn ◽  
...  
Keyword(s):  
Fresnel Zone ◽  
High Energy ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
Zone Plates

Wet etching of linear Fresnel zone plates for hard X-rays

2002 ◽  
Vol 61-62 ◽  
pp. 987-992 ◽  
Author(s):  
C. David ◽  
B. Nöhammer ◽  
E. Ziegler
Keyword(s):  
Fresnel Zone ◽  
Wet Etching ◽  
X Rays ◽  
Fresnel Zone Plates ◽  
Zone Plates
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