Journal of Infrared and Millimeter Waves, Volume. 43, Issue 1, 126(2024)

Research on the stress defect detection of infrared material using differential frequency modulation with cascaded dual photoelastic modulators

Ke-Wu LI1,2,3, Shuang WANG2,3、*, Meng-Wei LI2, and Zhi-Bin WANG2,3、*
Author Affiliations
  • 1School of Electrical and Control Engineering,North University of China,Taiyuan 030051,China
  • 2Institute of Frontier Interdisciplinary Sciences,North University of China,Taiyuan 030051,China
  • 3Engineering and Technology Research Center of Shanxi Province for Opto-electric Information and Instrument,Taiyuan 030051,China
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    Figures & Tables(6)
    Schematic diagram of stress defect measurement system
    Digital phase lock result of modulation light signals(Without sample)
    Measurement results of 1/4 waveplate (a)amplitude of the harmonic terms,(b)fast axis azimuth,(c)retardance.
    stress birefringence retardation two-dimensional distribution of Ge sample (a) Ge sample, (b) results of stress birefringence retardation distribution
    stress birefringence retardation two-dimensional distribution of Ge sample after applying force (a) Ge sample, (b) results of stress birefringence retardation distribution
    • Table 1. Measurement data of stress birefringence retardation in Ge samples

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      Table 1. Measurement data of stress birefringence retardation in Ge samples

      位置坐标(x,y)/mm快轴方位角/°应力双折射延迟量R/nm应力Δσ/(MPa)
      (69,70)174.041 243.5122.54
      (71,70)108.741 536.5027.85
      (73,70)93.49908.9316.47
      (75,70)93.46686.3912.44
      (77,70)92.64609.4511.05
      (79,70)92.18568.4410.30
      (81,70)91.53550.579.98
      (83,70)90.49554.0710.04
      (85,70)89.66571.8810.37
      (87,70)88.55602.1610.91
      (89,70)87.25654.4911.86
      (91,70)85.38778.1614.10
      (93,70)81.55978.3517.73
      (95,70)82.611 181.9221.42
      (97,70)85.741 270.7523.03
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    Ke-Wu LI, Shuang WANG, Meng-Wei LI, Zhi-Bin WANG. Research on the stress defect detection of infrared material using differential frequency modulation with cascaded dual photoelastic modulators[J]. Journal of Infrared and Millimeter Waves, 2024, 43(1): 126

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    Paper Information

    Category: Research Articles

    Received: Aug. 6, 2023

    Accepted: --

    Published Online: Dec. 26, 2023

    The Author Email: Shuang WANG (wangzhibin@nuc.edu.cn), Zhi-Bin WANG (wangzhibin@nuc.edu.cn)

    DOI:10.11972/j.issn.1001-9014.2024.01.017

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