Depth position measurement of inhomogeneities in semi-solid organic materials using 3D pulsed digital holography

María del Socorro Hernández-Montes; Fernando Mendoza Santoyo; C. Pérez-López

doi:10.1117/12.674373

10 February 2006 Depth position measurement of inhomogeneities in semi-solid organic materials using 3D pulsed digital holography

María del Socorro Hernández-Montes, Fernando Mendoza Santoyo, C. Pérez-López

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Proceedings Volume 6046, Fifth Symposium Optics in Industry; 604602 (2006) https://doi.org/10.1117/12.674373
Event: Fifth Symposium Optics in Industry, 2005, Santiago De Queretaro, Mexico

Abstract

We show experimental results to determine the depth of inhomogeneities such as glass spheres and biological human tumors, in semi-solids organic materials, like gels (phantom), using the non invasive optical technique called 3D Pulsed Digital Holography (PDH). We reported previously that this technique may be used for the detection of biological tissues¹. 3D Pulsed Digital Holography allowed us to make a quantitative analysis of the changes that the phantom suffers when it contains inhomogeneities as compared to a phantom that does not have one. The results obtained there showed quite remarkably the internal fault in semi-solids. In here we report early results obtained from three different object illumination positions that gave 3 wrapped phase maps that allowed the calculation of the depth position of the inhomogeneity within the phantom. The optical technique used looks at the phantom surface micro displacement, where measurements are correlated to the z position of the inhomogeneity inside the phantom. Likewise, the technique is able to show the deformation that the material undergoes in x, y, and z.

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María del Socorro Hernández-Montes, Fernando Mendoza Santoyo, and C. Pérez-López "Depth position measurement of inhomogeneities in semi-solid organic materials using 3D pulsed digital holography", Proc. SPIE 6046, Fifth Symposium Optics in Industry, 604602 (10 February 2006); https://doi.org/10.1117/12.674373

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KEYWORDS

Digital holography

3D metrology

Holograms

Organic materials

Glasses

Tumors

Biomedical optics

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