• DocumentCode
    3782163
  • Title

    Velocity measurement by a self-mixing laser diode using speckle correlation

  • Author

    S.K. Ozdemir;S. Ito;S. Takamiya;S. Shinohara;H. Yoshida;M. Sumi

  • Author_Institution
    Shizuoka Univ., Hamamatsu, Japan
  • Volume
    3
  • fYear
    1999
  • Firstpage
    1756
  • Abstract
    We propose a new self-mixing laser diode (SM-LD) speckle velocimeter based on autocorrelation. SM-LD launches and receives reflected light from a moving surface which has a random reflection profile. The speckle signals obtained from SM-LD are processed using autocorrelation. The linear relation between the velocity and the correlation length of the speckle intensity fluctuations allows the determination of the velocity of the target easily. The range of the investigated velocity is 20 mm/s to 450 mm/s.
  • Keywords
    "Velocity measurement","Diode lasers","Speckle","Surface emitting lasers","Vertical cavity surface emitting lasers","Autocorrelation","Photodiodes","Fluctuations","Rough surfaces","Surface roughness"
  • Publisher
    ieee
  • Conference_Titel
    Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE
  • ISSN
    1091-5281
  • Print_ISBN
    0-7803-5276-9
  • Type

    conf

  • DOI
    10.1109/IMTC.1999.776123
  • Filename
    776123
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3782163