Autocorrelation imaging of 3D structures using a femtosecond laser: application to imaging of sandstone

Ping Yu; M. Mustata; William Robert Headley; L. J. Pyrak-Nolte; David D. Nolte; Paul M. W. French

doi:10.1117/12.470423

11 June 2002 Autocorrelation imaging of 3D structures using a femtosecond laser: application to imaging of sandstone

Ping Yu, M. Mustata, William Robert Headley, L. J. Pyrak-Nolte, David D. Nolte, Paul M. W. French

Author Affiliations +

Proceedings Volume 4643, Ultrafast Phenomena in Semiconductors VI; (2002) https://doi.org/10.1117/12.470423
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States

Abstract

Optical coherence imaging (OCI) is an autocorrelation imaging technique that uses short-coherence light and holographic recording and reconstruction to perform laser-ranging into translucent media. OCI is a full-frame variant of OCT and shares excellent discrimination against scattered light from heterogeneous media. We present the first use of OCI to image into a heterogeneous translucent media: sandstone. There are two motivations for studying sandstone. First, it is an excellent example of a heterogeneous translucent medium on which to study the effects of holographic reconstruction in the presence of static scattered speckle. Second, it is of intrinsic interest for energy production as an excellent example of an oil or gas reservoir rock. Using Optical Coherence Imaging (OCI) we have imaged several layers of grains in a sandstone sample. Information on grain geometry was obtained as deep as 400 microns into the sample.

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Ping Yu, M. Mustata, William Robert Headley, L. J. Pyrak-Nolte, David D. Nolte, and Paul M. W. French "Autocorrelation imaging of 3D structures using a femtosecond laser: application to imaging of sandstone", Proc. SPIE 4643, Ultrafast Phenomena in Semiconductors VI, (11 June 2002); https://doi.org/10.1117/12.470423

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KEYWORDS

Holograms

Coherence imaging

Light scattering

Optical coherence tomography

Scanning electron microscopy

Translucency

Holography

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