1. Simultaneous dual-band ultra-high resolution optical coherence tomography

    Simultaneous dual-band ultra-high resolution optical coherence tomography
    Ultra-high resolution optical coherence tomography (OCT) imaging is demonstrated simultaneously at 840 nm and 1230 nm central wavelength using an off-the-shelf turn-key supercontinuum light source. Spectral filtering of the light source emission results in a double peak spectrum with average powers exceeding 100 mW and bandwidths exceeding 200 nm for each wavelength band. A free-space OCT setup optimized to support both wavelengths in parallel is introduced. OCT imaging of biological tissue ex vivo and in vivo is demonstrated with axial resolutions measured to be < 2 μm and < 4 μm at 840 nm and 1230 nm, respectively. This measuring scheme is ...
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