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2013
"Tuning of successively scanned two monolithic Vernier-tuned lasers and selective data sampling in optical comb swept source optical coherence tomography"
    Dong-hak Choi, Reiko Yoshimura, and Kohji Ohbayashi
    Biomedical Optics Express, Vol. 4, Issue 12, pp. 2962-2987 (2013).
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    OCT News "Feature Of The Week"
"Enhancement of the depth range up to 13.8 mm with filtered external k-sampling-clock in an SS-OCT system using a reflective Fabry-Perot tunable laser"
    Hisashi Yamada, Yasuo Niimura, Fumiko Hiwatashi, Dong-hak Choi, and Kohji Ohbayashi
    Proc. of SPIE, Vol. 8571 pp. 85710C-1 - 6 (2013).
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"The impact of real-time 3d imaging by ultra-high speed optical coherence tomography in urothelial carcinoma"
    Masaomi Ikeda, Kazumasa Matsumoto, Donghak Choi, Morihiro Nishi, Tetsuo Fujita, Kohji Ohbayashi, Kimiya Shimizu, and Masatsugu Iwamura
    BMC Urology, Vol. 13: 65 (2013).
    Read Full Paper
"Accommodative changes in human eye observed by Kitasato anterior segment optical coherence tomography"
    Nobuyuki Satoh, Kimiya Shimizu, Atsushi Goto, Akihito Igarashi, Kazutaka Kamiya, Kohji Ohbayashi
    Japanese Journal of Ophthalmology, Vol. 57, Issue 1, pp. 113-119 (2013).
    Read Full Paper

2012
"Spectral domain optical coherence tomography of multi-MHz A-scan rates at 1310 nm range and real-time 4D-display up to 41 volumes/second"
    Dong-hak Choi, Hideaki Hiro-Oka, Kimiya Shimizu, and Kohji Ohbayashi
    Biomedical Optics Express, Vol. 3, Issue 12, pp. 3067-3086 (2012).
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    Read Full Paper
"Optical amplification of the signal and sensitivity of the ultrafast spectral domain optical coherence tomography at an A-scan rate of 10MHz in a wavelength region of 1300nm "
    D. Choi, H. Hiro-oka, K. Shimizu, K. Ohbayashi
    Proc. of SPIE Vol. 8213 pp. 82131F-1 - 9 (2012).
    Read Full Paper
"Image diversity, shape modification with accommodation, dynamical change with accommodation, and age dependence of the ciliary body imaged by optical coherence tomography "
    Kimiya Shimizu, Nobuyuki Satou, Akihito Igarashi, Motoi Nakanishi, Atsushi Goto, Donghak Choi, Reiko Yoshimura, Hideaki Hiro-Oka, Hiroyuki Furukawa, and
    Kohji Ohbayashi
    Proc. of SPIE Vol. 8209 pp. 820909-1 - 9 (2012).
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"Discretely swept optical coherence tomography system using superstructure grating distributed Bragg reflector lasers at 1561-1639nm "
    D. Choi, R. Yoshimura, H. Hiro-oka, H. Furukawa, A. Goto, N. Satoh, A. Igarashi, M. Nakanishi, K. Shimizu, K. Ohbayashi
    Proc. of SPIE Vol. 8213 82132F-1 - 6 (2012).
    Read Full Paper

2011
"Ultra-high speed real-time 4D display system installed in ultra-high speed parallel OCT system at a volume rate of 12 volumes/sec"
    K. Ohbayashi, D. Choi, H. Hiro-oka, A. Kubota, T. Ohno, R. Ikeda, and K. Shimizu
    Proc. of SPIE Vol. 7889 pp. 78891Z-1 - 8 (2011).
    Read Full Paper
"Cross-sectional imaging of extracted jawbone of a pig by optical coherence tomography "
    Noriko Tachikawa, Reiko Yoshimura, and Kohji Ohbayashi
    Proc. of SPIE Vol. 7884 pp. 78840F-1 - 6 (2011).
    Read Full Paper
"Full-range imaging of the whole anterior segment of eye by high-speed optical frequency domain imaging using a reflective Fabry-Perot tunable laser "
    Hiroyuki Furukawa, Hideaki Hiro-Oka, Reiko Yoshimura, Dong-Hak Choi, Motoi Nakanishi, Akihito Igarashi, Kohji Ohbayashi, and Kimiya Shimizu
    Proc. of SPIE Vol. 7885 pp. 78850V-1 - 8 (2011).
    Read Full Paper

2010
"Full-range imaging of eye accommodation by high-speed long-depth range optical frequency domain imaging "
    Hiroyuki Furukawa, Hideaki Hiro-Oka, Nobuyuki Satoh, Reiko Yoshimura, Donghak Choi, Motoi Nakanishi, Akihito Igarashi, Hitoshi Ishikawa, Kohji Ohbayashi,
    and Kimiya Shimizu
    Biomedical Optics Express, Vol. 1, Issue 5, pp. 1491-1501 (2010).
    Read Full Paper

2009
"24 mm depth range discretely swept optical frequency domain imaging in dentistry"
    Hideo Kakuma, DongHak Choi, Hiroyuki Furukawa, Hideaki Hiro-Oka, Kohji Ohbayashi
    Proc. of SPIE Vol. 7162 pp. 716208-1 - 8 (2009).
    Proc. of SPIE Vol. 8213 pp. 82131F-1 - 9 (2012).
    Read Full Paper

2008
"Fourier domain optical coherence tomography using optical demultiplexers imaging at 60,000,000 lines/s"
    Donghak Choi, Hideaki Hiro-Oka, Hiroyuki Furukawa, Reiko Yoshimura, Motoi Nakanishi, Kimiya Shimizu, and Kohji Ohbayashi
    Optics Letters, Vol. 33, Issue 12, pp. 1318-1320 (2008).
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"60 MHz A-line rate ultra-high speed Fourier-domain optical coherence tomography"
    K. Ohbayashi, D. Choi, H. Hiro-Oka, H. Furukawa, R. Yoshimura, M. Nakanishi,and K. Shimizu
    Proc. of SPIE Vol. 6847 pp. 68470M-1 - 5 (2008).
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"140-nm Quasi-Continuous Fast Sweep Using SSG-DBR Lasers"
    N. Fujiwara, R. Yoshimura, K. Kato, H. Ishii, F. Kano, Y. Kawaguchi, Y. Kondo, K. Ohbayashi and H. Oohashi
    IEEE Photon. Technol. Lett. 20 pp. 1015-1017 (2008).
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"Single-mode 140 nm swept light source realized by using SSG-DBR lasers"
    N. Fujiwara, R. Yoshimura, K. Kato, H. Ishii, F. Kano, Y. Kawaguchi,Y. Kondo, K. Ohbayashi, and H. Oohashi
    Proc. of SPIE Vol. 6847 pp. 684713-1 - 7 (2008)
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"Optical imaging of hard and soft dental tissues using discretly swept optical frequency domain reflectrometry optical coherence tomography at wavelength from 1560 to 1600 nm"
    H. Kakuma, K. Ohbayashi and Y. Arakawa
    J. Biomed. Opt. 13(1) pp. 014012-1-5 (2008).
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"Doppler Optical Coherence Tomography Measurements in Discretely Swept Optical Coherence Tomography"
    R. Yoshimura, H. Hiro-oka, D. Choi, H. Furukawa, N. Fujiwara and K. Ohbayashi
    Proc. SPIE 6847 pp. 68472G-1-6 (2008).
    Read Full Paper

2007
"Dispersion matching of sample and reference arms in optical frequency domain reflectometry-optical coherence tomography using a dispersion-shifted fiber"
    Kota Asaka and Kohji Ohbayashi
    Optics Express, Vol. 15, Issue 8, pp. 5030-5042 (2007).
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"Dispersion compensation in OFDI-OCT by using dispersion shifted fiber"
    Kota Asaka and Kohji Ohbayashi
    Proc. SPIE 6429 p. 642926 (2007).
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"Discretely swept optical-frequency domain imaging toward high-resolution, high-speed, high-sensitivity, and long-depth-range"
    K. Ohbayashi, T. Amano, H. Hiro-oka, H. Furukawa, D. Choi, P. Jayavel, R. Yoshimura, A. Asaka, N. Fujiwara, H. Ishii, M. Suzuki, M. Nakanishi and K. Shimizu
    Proc. SPIE 6429 pp. 64291G-1-7 (2007).
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"A method of improving scanning speed and resolution of OFDR-OCT using multiple SSG-DBR lasers simultaneously"
    D. Choi, H. Hiro-oka, T. Amano, H. Furukawa, N. Fujiwara, H. Ishii and K. Ohbayashi
    Proc. SPIE 6429 pp. 64292E-1-7 (2007).
    Read Full Paper

2006
"Numerical Compensation of Dispersion Mismatch in Discretely Swept Optical-Frequency-Domain-Reflectometry Optical Coherence Tomography"
    Donghak Choi, Hideaki Hiro-Oka, Takuji Amano, Hiroyuki Furukawa, Fumiyoshi Kano1, Motoi Nakanishi, Kimiya Shimizu and Kohji Ohbayashi
    Japanese Journal 0f Applied Physics, Volume 45 pp. 6022-6027 (2006).
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"Improved Sensitivity of Optical Frequency Domain Reflectometry-Optical Coherence Tomography Using a Semiconductor Optical Amplifier"
    P. Jayavel, T. Amano, D. Choi, H. Furukawa, H. Hiro-Oka, K. Asaka, K. Ohbayashi
    Japanese Journal of Applied Physics, Volume 45, Issue 49, pp. L1317-L1319 (2006).
    Read Full Paper

2005
"Optical frequency-domain reflectometry with a rapid wavelength-scanning superstructure-grating distributed Bragg reflector laser"
    Takuji Amano, Hideaki Hiro-Oka, DongHak Choi, Hiroyuki Furukawa, Fumiyoshi Kano, Mituo Takeda, Motoi Nakanishi, Kimiya Shimizu, and Kohji Ohbayashi
    Applied Optics, Vol. 44, Issue 5, pp. 808-816 (2005).
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"Tissue imaging by OFDR-OCT using an SSG-DBR laser"
    D. Choi, T. Amano, H. Hiro-oka, H. Furukawa, T. Miyazawa, R. Yoshimura, M. Nakanishi, K. Shimizu and K. Ohbayashi
    Proc. SPIE 5690, pp. 101-113 (2005).
    Read Full Paper

2004
"OFDR with an SSG-DBR"
    T. Amano, H. Hiro-oka, D. H. Choi, H. Furukawa, F. Kano, M. Takada, M. Nakanishi, K. Shimizu and K. Ohbayahi
    Proc. SPIE 5531, pp. 375-382 (2004).
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