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

H. Thayyullathil, R.V.V.L. Langoju, P. Renganathan, R.M. Vasu, R. Kanjirodan, L.M. Patnaik

Applied Optics, vol. 43, no. 21, pp. 4133-4141, July 20, 2004.

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.

@ARTICLE(http://bigwww.epfl.ch/publications/thayyullathil0401.html,
AUTHOR="Thayyullathil, H. and Langoju, R.V.V.L. and Renganathan, P. and
        Vasu, R.M. and Kanjirodan, R. and Patnaik, L.M.",
TITLE="Three-Dimensional Optical Tomographic Imaging of Supersonic Jets
        through Inversion of Phase Data Obtained through the
        Transport-of-Intensity Equation",
JOURNAL="Applied Optics",
YEAR="2004",
volume="43",
number="21",
pages="4133--4141",
month="July 20,",
note="")

© 2004 OSA. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from OSA.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.