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  • Title: Linear optical coherence tomography system with extended measurement range.
    Author: Koch P, Hellemanns V, Hüttmann G.
    Journal: Opt Lett; 2006 Oct 01; 31(19):2882-4. PubMed ID: 16969410.
    Abstract:
    Optical coherence tomography (OCT) sensors traditionally use scanning optical delay lines with moving parts and a single detector. OCT systems with a linear detector array (linear OCT or L-OCT) are simple and robust, but a detector with approximately 10,000 pixels is needed for an imaging depth of 2mm, which is necessary for most biomedical applications. We present a new optical setup for L-OCT with an increased measurement range. An additional grating performs a reduction of the spatial frequencies of the fringe pattern on the detector without loss in the signal-to-noise ratio, so the signal can be sampled with a minimal number of pixels. The theory for this approach is addressed and the first measurements are presented.
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