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Volume 27 Issue 4
Dec.  2013
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Phase retardation measurement of wave-plate based on laser frequency splitting technology

  • 1.

    State Key Laboratory of Precision Measurement Technology and Instrument, Dapartment of Precision Instrument, Tsinghua University, Beijing, 100084

  • Received Date: 2002-07-12
    Accepted Date: 2002-09-19
  • Laser frequency splitting technology can be used to measure phase retardation of a wave-plate.With the wave-plate inserted into a laser cavity to split longitudinal laser,its phase retardation can be calculated by detecting the frequency differences between the same order or the adjacent order split longitudinal modes.No mechanical parameters but only the frequencies of optical beats need to be measured,and the measurement can be traced to the wavelength of the laser.Experiments prove that a resolution of 0.003° and a repeatability of 0.05° can be ensured.For a quartz quarter wave-plate of 1.5mm thick,the incertitude of the system is about 1′.
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    Shyu L,Chen C,Su D.Appl Opt,1993,32(22):4228～4230.
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    Sankarasubramanian K,Venkatakrishnan P.Opt & LaserTechnol,1998,30(1):15～21.
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    Lin Y,Zhou Z,Wang R.Opt Lett,1988,13(7):553～555.
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    Zhang S,Guo H,Li K et al.Opt & Laser in Engng,1995,23(1):1～28.
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Phase retardation measurement of wave-plate based on laser frequency splitting technology

  • 1. State Key Laboratory of Precision Measurement Technology and Instrument, Dapartment of Precision Instrument, Tsinghua University, Beijing, 100084
  • Received Date: 2002-07-12
  • Accepted Date: 2002-09-19
  • Available Online: 2003-07-25

Abstract: Laser frequency splitting technology can be used to measure phase retardation of a wave-plate.With the wave-plate inserted into a laser cavity to split longitudinal laser,its phase retardation can be calculated by detecting the frequency differences between the same order or the adjacent order split longitudinal modes.No mechanical parameters but only the frequencies of optical beats need to be measured,and the measurement can be traced to the wavelength of the laser.Experiments prove that a resolution of 0.003° and a repeatability of 0.05° can be ensured.For a quartz quarter wave-plate of 1.5mm thick,the incertitude of the system is about 1′.

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