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Dong Yongmian, Zheng Qiguang, Wang Tao, Gu Jianhui, Tao Xingzhi, Pan Qingyue, Shi Shihong. Focal length measurement by calculating Fourier transform spectrum interference fringes of symmetric double circular apertures[J]. LASER TECHNOLOGY, 2001, 25(1): 70-72.
Citation: Dong Yongmian, Zheng Qiguang, Wang Tao, Gu Jianhui, Tao Xingzhi, Pan Qingyue, Shi Shihong. Focal length measurement by calculating Fourier transform spectrum interference fringes of symmetric double circular apertures[J]. LASER TECHNOLOGY, 2001, 25(1): 70-72.

Focal length measurement by calculating Fourier transform spectrum interference fringes of symmetric double circular apertures

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  • Received Date: July 25, 1999
  • Revised Date: December 21, 1999
  • Published Date: January 24, 2001
  • A method of focal length measurement by calculating Fourier transform spectrum interference fringes of symmetric double circular apertures with small distance is presented.The setup is simple with high accuracy.The principle is described and the error is analyzed.The consistent experimental results are also given in the paper.
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