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Proceedings Paper

Large area full-field optical coherence tomography using white light source
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Paper Abstract

Optical coherence tomography (OCT) is an emerging technology for high-resolution cross-sectional imaging of 3D structures. Not only could OCT extract the internal features of an object, but it could acquire the 3D profile of an object as well. Hence it has huge potentials for industrial applications. Owing to non-scanning along the X-Y axis, full-field OCT could be the simplest and most economic imaging system, especially for applications where the speed is critical. For an OCT system, the performance and cost basically depends on the light source being used. The broader the source bandwidth, the finer of the depth resolution that could be reached; the more power of the source, the better signal-to-noise ratio and the deeper of penetration the system achieves. A typical SLD (Superluminescent Diode) light source has a bandwidth of 15 nm and 10 mW optical power at a price around $6,000. However, a Halogen bulb having 50W power and 200nm bandwidth only costs less than $10. The design and implementation of a large-area, full-field OCT system using Halogen white-light source is described in the paper. The experimental results obtained from 3D shaping and multiple-layer tomographies are also presented.

Paper Details

Date Published: 26 October 2007
PDF: 8 pages
Proc. SPIE 6796, Photonics North 2007, 67961F (26 October 2007); doi: 10.1117/12.778741
Show Author Affiliations
Shoude Chang, National Research Council Canada (Canada)
Youxin Mao, National Research Council Canada (Canada)
Sherif Sherif, National Research Council Canada (Canada)
Costel Flueraru, National Research Council Canada (Canada)


Published in SPIE Proceedings Vol. 6796:
Photonics North 2007

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