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  • Title: Fast-Fourier-domain delay line for in vivo optical coherence tomography with a polygonal scanner.
    Author: Oldenburg AL, Reynolds JJ, Marks DL, Boppart SA.
    Journal: Appl Opt; 2003 Aug 01; 42(22):4606-11. PubMed ID: 12916629.
    Abstract:
    We demonstrate in vivo optical coherence tomography using a Fourier-domain optical delay line constructed with a commercially available polygonal scanner. The 20-faceted polygonal mirror array, capable of scanning at rates up to 15 kHz, is implemented at 4 kHz to acquire 500 x 500 pixel images at 8 frames/s with a signal-to-noise ratio of 80 dB. Features of this delay line include scalability to high repetition rates, 98.6% linearity in group delay over 2 mm, and bandwidth support exceeding 150 nm. Images are obtained in an animal model (Xenopus laevis), and limitations due to phase-delay nonlinearity and polygon asymmetry are discussed.
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