1. Kouki Totsuka

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    1. Mentioned In 4 Articles

    2. Feature Of The Week 5/23/10: 140 kHz Optical Coherence Tomography by 2 Degree Of Freedom MEMS Scanner Based Swept Source

      Feature Of The Week 5/23/10: 140 kHz Optical Coherence Tomography by 2 Degree Of Freedom MEMS Scanner Based Swept Source
      Feature Of The Week 5/23/10: Swept source detection optical coherence tomography (OCT) is becoming ever more popular as a chosen approach for clinical applications. This has to do with many factors including speed, compactness, costs, signal processing advantages, and center wavelength capability. Swept source technology continues to improve at a major rate but still achieving a high-speed sweep and long coherence length is one of the most demanding ...
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    3. Optical coherence tomography imaging based on non-harmonic analysis

      A new processing technique called Non-Harmonic Analysis (NHA) is proposed for OCT imaging. Conventional Fourier-Domain OCT relies on the FFT calculation which depends on the window function and length. Axial resolution is counter proportional to the frame length of FFT that is limited by the swept range of the swept source in SS-OCT, or the pixel counts of CCD in SD-OCT degraded in FD-OCT. However, NHA process is intrinsically free ...
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    4. Large coherence length swept source for axial length measurement of the eye

      We present and demonstrate a swept source with a large coherence length using a quasi-phase continuous tuning (QPCT) technique. QPCT is a method of minimizing the phase shift per round trip with respect to the tunable filter so that the resonance of lasing becomes high, resulting in high finesse of ... [Appl. Opt. 48, D144-D150 (2009)]
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  2. About Kouki Totsuka

    Kouki Totsuka received the Ph.D. in physics from Shizuoka University, in 1999. He is currently a researcher at Santec Corporation, Aichi, Japan, since 2008, and has been involved in OCT project.