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Single-shot full-range optical coherence tomography
Single-shot full-range optical coherence tomography
Stefan Witte
Vrije Universiteit
Optical coherence tomography (OCT) is a powerful tool for high-
resolution noninvasive imaging of living tissue. We have recently
developed an OCT system that is capable of recording two-dimensional
images in a single shot (i.e. without the need for scanning). This
2D-OCT system enables us to record 6.7 x 3.2 mm images at 6 micron
resolution in a fraction of a millisecond.
I will discuss the influence of the spectral phase on OCT imaging,
and demonstrate that introducing a dispersion imbalance between the
OCT interferometer arms can resolve the complex-conjugate ambiguity
in Fourier-domain OCT. In this way, we are able to increase the
useful depth range of a standard OCT system by a factor of two.
Furthermore, I will present our efforts towards holographic
microscopy with short coherence light sources. By combining
microscopic imaging with a coherence gate, we hope to achieve 3D-
imaging of living tissue with micrometer resolution.
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