• DocumentCode
    1062293
  • Title

    Improved sensitivity in novel scheme of magneto-optical field sensor

  • Author

    numata, T. ; Yao, M. ; Inokuchi, S. ; Sakurai, Y.

  • Author_Institution
    Fac. of Eng. Sci., Osaka Univ., Japan
  • Volume
    27
  • Issue
    6
  • fYear
    1991
  • fDate
    11/1/1991 12:00:00 AM
  • Firstpage
    5393
  • Lastpage
    5395
  • Abstract
    The sensitivity of magnetooptical detection of small fields with multidomain materials under a coherent light is discussed. For fields below the saturation, a novel scheme is proposed to increase sensitivity. Separate detection of the undeflected zeroth-order beam and diffracted beams enables their opposing responses to be added. A garnet of θF=60° (where F is the saturation Faraday rotation) yielded a high sensitivity of more than twice that in the conventional optical configuration while a material of θF=90° offers a theoretical improvement of a factor of four
  • Keywords
    Faraday effect; garnets; magnetic field measurement; magneto-optical devices; nonelectric sensing devices; coherent light; diffracted beams; garnet; magneto-optical field sensor; multidomain materials; saturation Faraday rotation; sensitivity; undeflected zeroth-order beam; Magnetic materials; Magnetic sensors; Magnetization; Magnetooptic effects; Magnetooptic recording; Nonlinear optics; Optical materials; Optical saturation; Optical sensors; Polarization;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.278849
  • Filename
    278849
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1062293