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Cheng Xiangyin, Guo Jihua, Yin Chunyong. Beat frequency stabilization of a longitudinal zeeman laser[J]. LASER TECHNOLOGY, 1996, 20(2): 95-98.
Citation: Cheng Xiangyin, Guo Jihua, Yin Chunyong. Beat frequency stabilization of a longitudinal zeeman laser[J]. LASER TECHNOLOGY, 1996, 20(2): 95-98.
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Beat frequency stabilization of a longitudinal zeeman laser

  • Department of Precision Instruments, Tsinghua University

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  • Received Date: January 22, 1995
  • Revised Date: September 15, 1995
  • Published Date: March 24, 1996
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    • Abstract
  • The double frequency laser interferometer has been widely used in precisionmeasurement.When it is used to measure straightness, the Wollaston prism can not be moved out of thelaser beam.So it can not be utilized to measure axiality. In this paer a new method of stabilizing the beatfrequency of a He-Ne longitudinal Zeeman laser, in which 8098system is used,has been developed.Itcan also seek the maximum of frequency difference automatically,so this guarantees the frequency reproducibility. The maximum of frequency difference is about 600kHz.The change of the beat frequency isno more than 5kHzduring 5 hours.This stability makes it possible to measure the phase between reference signal and measuring signal.Therefore, he interferometer using this beat frequency stabilized HeNe laser can be used to measure straightness and axiality conveniently.
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    • References (2)
  • [1]
    Shao Y, Yin Ch. A new development in frequency stebiisiation of a longitudinall Zeeman laser. SPIN Proc. 1990;1230:400
    [1]
    Baer T, Kowelaki F V, Hall J I. Apul Opt, 1985;24(13):1902-1904
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