Full aperture backscatter station imager diagnostics system for far-field imaging of laser plasma instabilities on Nova

1997 ◽  
Vol 68 (1) ◽  
pp. 672-675 ◽  
Author(s):  
Mark D. Wilke ◽  
Juan C. Fernández ◽  
Ralph R. Berggren ◽  
Richard F. Horton ◽  
David S. Montgomery ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Plasma Instabilities ◽  
Far Field ◽  
Diagnostics System ◽  
Field Imaging

scholarly journals Imaging with Local Speckle Intensity Correlations: Theory and Practice

2021 ◽  
Vol 40 (3) ◽  
pp. 1-22
Author(s):  
Marina Alterman ◽  
Chen Bar ◽  
Ioannis Gkioulekas ◽  
Anat Levin
Keyword(s):  
Near Field ◽  
Biological Tissues ◽  
Computational Imaging ◽  
Theory And Practice ◽  
Fluorescent Imaging ◽  
Light Sources ◽  
Far Field ◽  
Scattering Layer ◽  
Speckle Patterns ◽  
Field Imaging

Recent advances in computational imaging have significantly expanded our ability to image through scattering layers such as biological tissues by exploiting the auto-correlation properties of captured speckle intensity patterns. However, most experimental demonstrations of this capability focus on the far-field imaging setting, where obscured light sources are very far from the scattering layer. By contrast, medical imaging applications such as fluorescent imaging operate in the near-field imaging setting, where sources are inside the scattering layer. We provide a theoretical and experimental study of the similarities and differences between the two settings, highlighting the increased challenges posed by the near-field setting. We then draw insights from this analysis to develop a new algorithm for imaging through scattering that is tailored to the near-field setting by taking advantage of unique properties of speckle patterns formed under this setting, such as their local support. We present a theoretical analysis of the advantages of our algorithm and perform real experiments in both far-field and near-field configurations, showing an order-of magnitude expansion in both the range and the density of the obscured patterns that can be recovered.

Superresolution in far-field imaging

2002 ◽  
Vol 19 (3) ◽  
pp. 436 ◽  
Author(s):  
I. Leizerson ◽  
S. G. Lipson ◽  
V. Sarafis
Keyword(s):  
Far Field ◽  
Field Imaging

scholarly journals Far-field imaging device: planar hyperlens with magnification using multi-layer metamaterial

2008 ◽  
Vol 16 (25) ◽  
pp. 21142 ◽  
Author(s):  
Wei Wang ◽  
Hui Xing ◽  
Liang Fang ◽  
Yao Liu ◽  
Junxian Ma ◽  
...  
Keyword(s):  
Far Field ◽  
Imaging Device ◽  
Field Imaging

scholarly journals Simultaneous near-field and far-field imaging of the11.9‐nmNi-likeSnsoft-x-ray laser

2004 ◽  
Vol 70 (1) ◽  
Author(s):  
F. Staub ◽  
M. Braud ◽  
J. E. Balmer ◽  
J. Nilsen ◽  
S. Bajt
Keyword(s):  
Near Field ◽  
Far Field ◽  
X Ray ◽  
Field Imaging

Interplay Between Laser Plasma Instabilities

1998 ◽  
Vol T75 (1) ◽  
pp. 7 ◽  
Author(s):  
William L. Kruer ◽  
Bedros B. Afeyan ◽  
A. E. Chou ◽  
R. K. Kirkwood ◽  
D. S. Montgomery ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Plasma Instabilities

Microwave near-field and far-field imaging of composite plate with hat stiffeners

2019 ◽  
Vol 161 ◽  
pp. 87-95 ◽  
Author(s):  
Zhencheng Li ◽  
Licheng Zhou ◽  
Hongshuai Lei ◽  
Yongmao Pei
Keyword(s):  
Composite Plate ◽  
Near Field ◽  
Far Field ◽  
Field Imaging

Far-Field Imaging Beyond the Diffraction Limit Using Waves Interference

2020 ◽  
Vol 38 (8) ◽  
pp. 2322-2327
Author(s):  
Pooria Salami ◽  
Leila Yousefi
Keyword(s):  
Diffraction Limit ◽  
Far Field ◽  
Field Imaging
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