Phase-shifting algorithm to achieve high-speed long-depth-range probing by frequency-domain optical coherence tomography |
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Authors: | Leitgeb Rainer A Hitzenberger Christoph K Fercher Adolf F Bajraszewski Tomasz |
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Institution: | Department of Medical Physics, University of Vienna, Waehringer Strasse 13, Vienna A-1090, Austria. rainer.leitgeb@univie.ac.at |
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Abstract: | Standard Fourier-domain optical coherence tomography (FDOCT) suffers from the presence of autocorrelation terms that obscure the object information and degrade the sensitivity and signal-to-noise ratio. By exploiting the phase information of the recorded interferograms, it is possible to remove those autocorrelation terms and to double the measurement range. However, standard phase-retrieval algorithms need three to five interferograms. We present a novel technique that shows all the features of complex FDOCT with only two recorded interferograms. |
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