Laser & Optoelectronics Progress, Volume. 60, Issue 3, 0312025(2023)

Design of Synthetic-Wave Absolute-Distance Interferometric System Using Two-Cavity Dual-Frequency Nd∶YAG Laser with Large Frequency-Difference

Mingxing Jiao1、*, Fei Jiang1, Juan Su2, Junhong Xing1, Yun Liu1, Tianhong Lian1, Jianning Liu1, Xian Wang1, and Hequn Li1
Author Affiliations
  • 1School of Mechanical and Precision Instrumental Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China
  • 2Key Laboratory of Photoelectric Logging and Detecting of Oil and Gas, Ministry of Education, Xi'an Shiyou University, Xi'an 710065, Shaanxi, China
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    Figures & Tables(12)
    Schematic diagram of the frequency-difference stabilizing system for the TCDFL using QD-PDH frequency stabilizing method
    Oscillating spectra of dual-frequency laser with a frequency-difference of 24 GHz
    Relationship between the laser output power and LD pump power
    Frequency discriminating curves of the QD-PDH. (a) Linear cavity; (b) right-angle cavity
    Error signals of the frequency-locked QD-PDH subsystems
    Frequency-difference variation curve of the frequency-locked dual-frequency Nd∶YAG laser
    Schematic diagram of dual-frequency laser synthetic-wave absolute-distance interferometric system
    Phase-difference of heterodyne interference signals. (a) Starting position; (b) ending position
    Phase-difference variation during continuous movement of CCP
    Phase-difference of heterodyne interference signals. (a) Starting position; (b) ending position
    • Table 1. Experimental data and processing results of synthetic-wavelength calibration

      View table

      Table 1. Experimental data and processing results of synthetic-wavelength calibration

      iΔφ1 /(˚)Δφ2 /(˚)Δφ1-Δφ2]/(˚)εiλsi /mm
      λsav /mm12.4614
      1218.561200.69617.8650.04962512.4614
      2218.457200.56917.8880.04968912.4613
      3218.680200.82417.8560.04960012.4614
      4218.556200.73017.8260.04951712.4614
      5218.491200.69817.7930.04942512.4615
      6218.354200.67017.6840.04912212.4617
      7218.576200.69517.8810.04966912.4613
      8218.462200.67717.7850.04940312.4615
      9218.621200.75917.8620.04961712.4614
      10218.504200.63317.8710.04964212.4613
    • Table 2. Experimental data and processing results of absolute-distance measurement

      View table

      Table 2. Experimental data and processing results of absolute-distance measurement

      iΔφ1 /(˚)Δφ2 /(˚)Δφ1-Δφ2]/(˚)εiDi /mm
      Dav /mm899.3851
      1218.75593.684125.0710.347419899.3855
      2218.62693.544125.0820.347450899.3857
      3218.50493.625124.8790.346886899.3821
      4218.78893.676125.1120.347533899.3862
      5218.63893.614125.0240.347289899.3847
      6218.50993.563124.9460.347072899.3833
      7218.69593.533125.1620.347672899.3870
      8218.56993.466125.1030.347508899.3860
      9218.77493.712125.0620.347394899.3853
      10218.41993.345125.0740.347428899.3855
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    Mingxing Jiao, Fei Jiang, Juan Su, Junhong Xing, Yun Liu, Tianhong Lian, Jianning Liu, Xian Wang, Hequn Li. Design of Synthetic-Wave Absolute-Distance Interferometric System Using Two-Cavity Dual-Frequency Nd∶YAG Laser with Large Frequency-Difference[J]. Laser & Optoelectronics Progress, 2023, 60(3): 0312025

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    Paper Information

    Category: Instrumentation, Measurement and Metrology

    Received: Oct. 8, 2022

    Accepted: Nov. 22, 2022

    Published Online: Feb. 13, 2023

    The Author Email: Jiao Mingxing (2237663196@qq.com)

    DOI:10.3788/LOP222685

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