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Differential laser Doppler velocimetry for cross-sectional velocity distribution measurements using 48-channel spatial encoding and nonmechanical scanning

  • Special section: Regular Paper
  • The 11th International Conference on Optics-Photonics Design & Fabrication (ODF’18), Hiroshima, Japan
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Abstract

A differential laser Doppler velocimeter using 48-channel spatial encoded measurement points is proposed for dense cross-sectional velocity distribution measurements. An asymmetrical push–pull configuration and multiple photodiodes are employed to increase the number of the measurement points. The functionality of the proposed structure is experimentally demonstrated. The results indicate that a cross-sectional velocity distribution is successfully measured with the proposed structure.

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Acknowledgements

The authors thank to S. Katsumi, R. Matsuda, and S. Ueki for their efforts in experiment. This work in part was supported by JSPS KAKENHI Grant number 15H04018 and 19K04426.

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Authors and Affiliations

  1. Department of Electronics and Information Engineering, Faculty of Engineering, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa, 761-0396, Japan

    Koichi Maru, Yuki Yoshida, Mayu Yukinari & Ryo Kimura

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  1. Koichi Maru
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  2. Yuki Yoshida
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  3. Mayu Yukinari
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  4. Ryo Kimura
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Correspondence to Koichi Maru.

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Maru, K., Yoshida, Y., Yukinari, M. et al. Differential laser Doppler velocimetry for cross-sectional velocity distribution measurements using 48-channel spatial encoding and nonmechanical scanning. Opt Rev 26, 487–492 (2019). https://doi.org/10.1007/s10043-019-00544-0

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  • DOI: https://doi.org/10.1007/s10043-019-00544-0

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