1. High-speed, full-range optical coherence tomography

    High-speed, full-range optical coherence tomography
    A new technique to remove complex-conjugate artifacts inherent to conventional Fourier-domain interferometry can double accessible imaging depth. In the past decade, optical coherence tomography (OCT)1 has emerged as an important, noninvasive tool for depth-resolved imaging of biological structures. Current developments are shifting its focus toward spectral-domain and swept-source techniques, since these frequency-domain OCT (FDOCT) versions have better acquisition speed and sensitivity than time-domain imaging.2 However, a major drawback limiting FDOCT's practical application is the complex-conjugate ambiguity. The detected, real-valued spectral interferogram is Fourier transformed to localize the scatter in the sample. The Fourier transform of a real-valued ...
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