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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 21 — Jul. 20, 2004
  • pp: 4133–4141

Three-dimensional optical tomographic imaging of supersonic jets through inversion of phase data obtained through the transport-of-intensity equation

Hemanth Thayyullathil, Rajesh Langoju, Renganathan Padmaram, R. Mohan Vasu, Rajan Kanjirodan, and Lalit M. Patnaik  »View Author Affiliations


Applied Optics, Vol. 43, Issue 21, pp. 4133-4141 (2004)
http://dx.doi.org/10.1364/AO.43.004133


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Abstract

We report experimental results of quantitative imaging in supersonic circular jets by using a monochromatic light probe. An expanding cone of light interrogates a three-dimensional volume of a supersonic steady-state flow from a circular jet. The distortion caused to the spherical wave by the presence of the jet is determined through our measuring normal intensity transport. A cone-beam tomographic algorithm is used to invert wave-front distortion to changes in refractive index introduced by the flow. The refractive index is converted into density whose cross sections reveal shock and other characteristics of the flow.

© 2004 Optical Society of America

OCIS Codes
(100.3010) Image processing : Image reconstruction techniques
(100.3190) Image processing : Inverse problems
(100.5070) Image processing : Phase retrieval
(100.6950) Image processing : Tomographic image processing
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.6960) Medical optics and biotechnology : Tomography

History
Original Manuscript: September 5, 2003
Revised Manuscript: April 27, 2004
Published: July 20, 2004

Citation
Hemanth Thayyullathil, Rajesh Langoju, Renganathan Padmaram, R. Mohan Vasu, Rajan Kanjirodan, and Lalit M. Patnaik, "Three-dimensional optical tomographic imaging of supersonic jets through inversion of phase data obtained through the transport-of-intensity equation," Appl. Opt. 43, 4133-4141 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-21-4133

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