Three-Dimensional Optical Tomographic Imaging of Supersonic Jets through Inversion of Phase Data Obtained through the Transport-of-Intensity Equation

Thayyullathil, Hemanth and Langoju, Rajesh and Padmaram, Renganathan and Vasu, Mohan R and Kanjirodan, Rajan and Patnaik, Lalit M (2004) Three-Dimensional Optical Tomographic Imaging of Supersonic Jets through Inversion of Phase Data Obtained through the Transport-of-Intensity Equation. In: Applied Optics, 43 (21). pp. 4133-4141.

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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.

Item Type:	Journal Article
Publication:	Applied Optics
Publisher:	Optical Society of America
Additional Information:	The Copyright of this article belongs to the Optical Society of America
Keywords:	Image processing;Image reconstruction techniques;Inverse problems;Phase retrieval;Tomographic image processing;Image reconstruction techniques;Tomography
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	25 Aug 2008
Last Modified:	17 Jan 2012 06:15
URI:	http://eprints.iisc.ac.in/id/eprint/2186

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