1. Impact of a detector dead time in phase-resolved Doppler analysis using spectral domain optical coherence tomography

    Impact of a detector dead time in phase-resolved Doppler analysis using spectral domain optical coherence tomography

    For any oblique sample movement containing a transverse velocity component, the commonly used linear relationship between the phase shift and the axial velocity component is erroneous for spectrometer-based optical coherence tomography (spectral domain OCT, SD-OCT). We recently proposed a new Doppler model that assumes a continuous integration of the photocurrent. In this research, we extend the model for detectors with a shutter control by taking detector dead time into account. We present the new relation between phase shift and oblique sample displacement as well as the correlation of the phases of consecutive depth scans, in dependency on the detector dead ...

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