Cubic meter volume optical coherence tomography

Zhao Wang, Ben Potsaid, Long Chen, Chris Doerr, Hsiang-Chieh Lee, Torben Nielson, Vijaysekhar Jayaraman, Alex E. Cable, Eric Swanson and James G. Fujimoto;
Optica, Vol. 3, Issue 12, pp. 1496-1503 (open-access)

Abstract:

Optical coherence tomography (OCT) is a powerful three-dimensional (3D) imaging modality with micrometer-scale axial resolution and up to multi-GigaVoxel/s imaging speed. However, the imaging range of high-speed OCT has been limited. Here, we report 3D OCT over cubic meter volumes using a long coherence length, 1310 nm vertical-cavity surface-emitting laser and silicon photonic integrated circuit dual-quadrature receiver technology combined with enhanced signal processing. We achieved 15 μm depth resolution for tomographic imaging at a 100 kHz axial scan rate over a 1.5 m range. We show 3D macroscopic imaging examples of a human mannequin, bicycle, machine shop gauge blocks, and a human skull/brain model. High-bandwidth, meter-range OCT demonstrates new capabilities that promise to enable a wide range of biomedical, scientific, industrial, and research applications.

Dr. Wang presented these results at BIOS/SPIE Photonics West 2016; view the presentation at SPIE with your conference login:
Miniaturized silicon photonic integrated swept source OCT receiver with dual polarization, dual balanced, in-phase and quadrature detection (Conference Presentation)

Proc. SPIE 9697, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XX, 96970M (April 26, 2016); doi:10.1117/12.2214615

MIT Mannequin and Chess Board

Mannequin and chess board imaged at 15 micron resolution.

Bicycle 3D OCT image

Dr. David Huang’s old bicycle, left in the Fujimoto lab years ago, finds new purpose.

Depth-colored volumetric imaging

Tomographic imaging captures high-resolution details within and through the objects, not just surface topology. These bottles are situated in front of a metal optical table; color-coding indicates depth of the surface.

Imaging and animated cross-sectioning of a skull.

Imaging and animated cross-sectioning of a skull, illustrating the post-processing analysis that can be performed on the volumetric data.

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