Spurious frequency spectra caused by the scattered lights from transparent channel wall in the laser doppler velocimetry

Eiji Okada, Haruyuki Minamitani

    研究成果: Article

    2 引用 (Scopus)

    抜粋

    Spurious frequency spectra, SFS, in laser Doppler velocimetry, caused by a superposition of the scattered light from a stationary transparent wall of a thin flow channel with the incident light are discussed and systematically analyzed. The observed SFS as well as the amplitude of SFS changed with the position and aperture size of the receiving optics. They were entirely different from the so-called frequency broadening and the characteristics indicated that the scattered light served as reference beams on the heterodyne detection of the Doppler signals. A theoretical analysis of the SFS, undertaken by using a simple model, is compared with experimental results; both were in good agreement. A rejection method of SFS is also discussed.

    元の言語English
    ページ(範囲)941-946
    ページ数6
    ジャーナルJapanese journal of applied physics
    26
    発行部数6R
    DOI
    出版物ステータスPublished - 1987 6

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

    フィンガープリント Spurious frequency spectra caused by the scattered lights from transparent channel wall in the laser doppler velocimetry' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用