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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 33 — Nov. 20, 2007
  • pp: 8193–8201

Observer for a thick layer of solid deuterium–tritium using backlit optical shadowgraphy and interferometry

Alexandre Choux, Eric Busvelle, Jean Paul Gauthier, and Ghislain Pascal  »View Author Affiliations

Applied Optics, Vol. 46, Issue 33, pp. 8193-8201 (2007)

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Our work is in the context of the French “laser mégajoule” project, about fusion by inertial confinement. The project leads to the problem of characterizing the inner surface, of the approximately spherical target, by optical shadowgraphy techniques. Our work is entirely based on the basic idea that optical shadowgraphy produces “caustics” of systems of optical rays, which contain a great deal of 3D information about the surface to be characterized. We develop a method of 3D reconstruction based upon this idea plus a “small perturbations” technique. Although computations are made in the special “spherical” case, the method is in fact general and may be extended to several other situations.

© 2007 Optical Society of America

OCIS Codes
(100.3190) Image processing : Inverse problems
(100.5010) Image processing : Pattern recognition
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(350.2660) Other areas of optics : Fusion

Original Manuscript: December 13, 2006
Revised Manuscript: May 4, 2007
Manuscript Accepted: May 18, 2007
Published: November 19, 2007

Alexandre Choux, Eric Busvelle, Jean Paul Gauthier, and Ghislain Pascal, "Observer for a thick layer of solid deuterium-tritium using backlit optical shadowgraphy and interferometry," Appl. Opt. 46, 8193-8201 (2007)

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