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Optical Computed Tomography Based on Extraction of Quasi-Straight forward Propagating Photons Using Sum-Frequency Generation Technique

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Abstract

Aiming at the realization of optical computed tomography (optical CT), a compact system comprised of two cw-lasers and a detector was proposed for the extraction of quasi-straightforward propagating photons from scattered light transmitting through a scattering medium. The extraction ability of the system based on the sum-frequency generation technique was investigated using a standard scattering medium of Intralipid-10% aqueous solution and was found to be 78 dB in dynamic range. The optical CT image of absorbers placed in the scattering medium was successfully obtained with high contrast using the proposed system.

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Authors and Affiliations

  1. Department of Physics and Electronics, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho, 1-1, Sakai, Osaka, 599-8531, Japan

    Kenji Wada, Yasuhiko Satomura, Hiroshi Kamie, Takafumi Kiuchi & Hiromichi Horinaka

  2. Okayama Research Lab, Oyokoden Applied Photonics Lab Co., Ltd., 3205, Tomiyoshi, Okayama, Okayama, 701-1133, Japan

    Yoshio Cho

  3. School of Allied Health Sciences, KITASATO University, 1-15-1, Kitasato, Sagamihara, Kanagawa, 228-8555, Japan

    Tokuo Umeda

  4. Tsukuba Technology Center, Shimadzu Co., Ltd., 3-17-1, Azuma, Tsukuba, Ibaraki, 305-0031, Japan

    Kenji Nakamura

Authors
  1. Kenji Wada
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  2. Yasuhiko Satomura
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  3. Hiroshi Kamie
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  4. Takafumi Kiuchi
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  5. Hiromichi Horinaka
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  6. Yoshio Cho
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  7. Tokuo Umeda
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  8. Kenji Nakamura
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Correspondence to Kenji Wada.

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Wada, K., Satomura, Y., Kamie, H. et al. Optical Computed Tomography Based on Extraction of Quasi-Straight forward Propagating Photons Using Sum-Frequency Generation Technique. OPT REV 7, 432–435 (2000). https://doi.org/10.1007/s10043-000-0432-z

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  • DOI: https://doi.org/10.1007/s10043-000-0432-z

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