Off-axis focusing and imaging of scaled zone plates and anamorphic photon sieves

2014 ◽  
Author(s):  
Junyong Zhang ◽  
Liangjun Zhang ◽  
Zhaoyang Jiao ◽  
Yanli Zhang
Keyword(s):  
Zone Plates ◽  
Photon Sieves

scholarly journals Electrically switchable phase-type fractal zone plates and fractal photon sieves

2009 ◽  
Vol 17 (15) ◽  
pp. 12418 ◽  
Author(s):  
Yan Jun Liu ◽  
Hai Tao Dai ◽  
Xiao Wei Sun ◽  
Tony Jun Huang
Keyword(s):  
Zone Plates ◽  
Phase Type ◽  
Photon Sieves

Simulation of paraxial pinhole photon sieves model based on Fresnel zone plates

2006 ◽  
Author(s):  
Zi Lin ◽  
Haiyan Wang ◽  
Changli Song ◽  
Wei Ji ◽  
Biao Qi
Keyword(s):  
Fresnel Zone ◽  
Fresnel Zone Plates ◽  
Model Based ◽  
Zone Plates ◽  
Photon Sieves

THE EFFECTS OF MANUFACTURING INACCURACIES ON THE IMAGING PROPERTIES OF ZONE PLATES

1984 ◽  
Vol 45 (C2) ◽  
pp. C2-93-C2-96
Author(s):  
M. J. Simpson ◽  
M. T. Browne ◽  
R. E. Burge ◽  
P. Charalambous ◽  
P. J. Duke ◽  
...  
Keyword(s):  
Zone Plates ◽  
Imaging Properties

scholarly journals Analysis of Predistortion Techniques on Fresnel Zone Plates in Ultrasound Applications

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5066
Author(s):  
José Miguel Fuster ◽  
Sergio Pérez-López ◽  
Francisco Belmar ◽  
Pilar Candelas
Keyword(s):  
Intensity Distribution ◽  
Fresnel Zone ◽  
Focal Depth ◽  
Acoustic Intensity ◽  
Fresnel Zone Plates ◽  
Therapeutic Applications ◽  
Zone Plates ◽  
Ultrasound Applications

In this work, we analyze the effect of predistortion techniques on the focusing profile of Fresnel Zone Plates (FZPs) in ultrasound applications. This novel predistortion method is based on either increasing or decreasing the width of some of the FZP Fresnel rings by a certain amount. We investigate how the magnitude of the predistortion, as well as the number and location of the predistorted rings, influences the lens focusing profile. This focusing profile can be affected in different ways depending on the area of the lens where the predistortion is applied. It is shown that when the inner area of the lens, closer to its center, is predistorted, this technique allows the control of the focal depth at the main focus. However, when the predistortion is applied to an area farther from the center of the lens, the acoustic intensity distribution among the main focus and the closest adjacent secondary foci can be tailored at a certain degree. This predistortion technique shows great potential and can be used to control, modify and shape the FZP focusing profile in both industrial and therapeutic applications.

scholarly journals Thermal stability of tungsten zone plates for focusing hard x-ray free-electron laser radiation

2012 ◽  
Vol 14 (4) ◽  
pp. 043010 ◽  
Author(s):  
D Nilsson ◽  
F Uhlén ◽  
J Reinspach ◽  
H M Hertz ◽  
A Holmberg ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Laser Radiation ◽  
Free Electron ◽  
Free Electron Laser ◽  
X Ray ◽  
Zone Plates ◽  
Thermal Stability Of

Spiral zone plates with arbitrary diameter of the dark spot in the centre of their focal point

1995 ◽  
Vol 114 (1-2) ◽  
pp. 1-8 ◽  
Author(s):  
Z Jaroszewicz ◽  
A Kolodziejczyk ◽  
D Mouriz ◽  
C Gomez-Reino
Keyword(s):  
Focal Point ◽  
Dark Spot ◽  
Zone Plates

APD-based x-ray imaging telescope using Fresnel zone plates for extremely high spatial resolution

2005 ◽  
Author(s):  
Michael R. Squillante ◽  
Richard A. Myers ◽  
Mitchell Woodring ◽  
James F. Christian ◽  
Frank Robertson ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Fresnel Zone ◽  
Fresnel Zone Plates ◽  
X Ray ◽  
Zone Plates ◽  
X Ray Imaging ◽  
Imaging Telescope
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