1. Articles from sangyoun gee

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    1. Spectrally-sampled OCT for sensitivity improvement from limited optical power

      Spectrally-sampled OCT for sensitivity improvement from limited optical power

      Although high optical illumination power is favored in optical coherence tomography (OCT) for better signal-to-noise ratio, optical power is often limited by a damaged threshold for biomedical living tissues and autocorrelation signals observed in tomograms. In order to improve signal sensitivity without increasing the optical illumination power, a spectrally sampled multi-wavelength light source is proposed for the OCT system. A fiber Sagnac comb filter was used to spectrally sample the output of a continuous spectral light source. Point spread function analysis shows that the spectrally sampled OCT has an almost 50% dynamic range improvement in comparison with a conventional continuous ...

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    2. Quasi-holographic solution to polarization-sensitive optical coherence tomography acceptable to nonlaboratory applications

      Vitali Tougbaev, Tae Joong Eom, Bong-Ahn Yu et al. Experimental proof-of-concept is presented for a quasi-holographic solution to polarization-sensitive optical coherence tomography (PS OCT). Due to decoupling between the reference and sample beams by polarization, the solution seems acceptable to acquisition and communication of optical data in the ... [J. Biomed. Opt. 13, 044014 (2008)] published Mon Aug 11, 2008.
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    1. (2 articles) Tae Joong Eom
    2. (2 articles) Kyungpook National University
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