A New Method of Measuring Microspot Parameters in a Magnetooptic Storage System : Head Technology :

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  • RUAN,Yu
    Department of Optical Engineering, Huazhong University of Science and Technology Wuhan
  • CAO,Danhua
    Department of Optical Engineering, Huazhong University of Science and Technology Wuhan
  • LI,Mingzhi
    Department of Optical Engineering, Huazhong University of Science and Technology Wuhan

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説明

On the basis of frequency analysis of magnetooptic signals, a new method to measure microsized spots is described. The method not only has high measuring accuracy and the ability of real-time measurement, but it is also simple. In this paper, several mathematical models to examine measuring error are developed. By theoretical analysis, for detection frequency of 0.6 MHz and spot radius of 0.5μm, the relative error is within 0.032%.

収録刊行物

  • JJAP series

    JJAP series 6 178-180, 1992-03-31

    Japanese Journal of Applied Physics

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