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Dai Gaoliang, Yin Chunyong, Xie Guangping. Improving the control performance of frequency stabilized system for transverse Zeeman laser tube[J]. LASER TECHNOLOGY, 1998, 22(6): 325-328.
Citation: Dai Gaoliang, Yin Chunyong, Xie Guangping. Improving the control performance of frequency stabilized system for transverse Zeeman laser tube[J]. LASER TECHNOLOGY, 1998, 22(6): 325-328.
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Improving the control performance of frequency stabilized system for transverse Zeeman laser tube

  • 1.

    Dept.of Precision Instrument and Mechanics, Tsinghua University, Beijing, 100084;

  • 2.

    Beijing Graduate School, China University of Mining and Technology, Beijing, 100083

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  • Received Date: July 02, 1997
  • Revised Date: July 02, 1997
  • Published Date: November 24, 1998
    Graphical Abstract
    • Abstract
  • A real industry scale frequency stabilized system for transverse Zeeman laser tube is composed.It is based on 8098 single chip computer system,which calculates control voltage with MPC algorithm and outputs PWM wave to realize thermal compensation.Because the control voltage calculated from MPC algorithm is always real number,it must be rounded to integer.This round error can influence the control performance seriously.A method of improving D/A converting precision by modulating pulse width of PWM wave with low frequency and little amplitude is introduced.The experiment show that it is effctive.By adopting this method,control range is enlarged,so that the system can be stabilized over longer period than 10h.The laser tube reached frequency stability of 8.7×10-10 with sample time period of 10s.
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    • References (3)
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    巴恩旭,杨性愉,刘玉照et al.光学学报,1984;4(5):398~405
    [2]
    戴高良,殷纯永,谢广平1中国激光,1998;25(3)
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    Umeda N.Appl Opt,1980;19(3):442~450
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