Acta Optica Sinica, Volume. 43, Issue 4, 0412001(2023)
Stress Birefringence Measurement Based on Double Cascaded Photoelastic Modulation with Differential Frequencies
Figures & Tables(10)
Fig. 6. Digital phase lock results of modulation light signals. (a) Amplitude of frequency multiplication terms; (b) ratio of frequency multiplication terms
Fig. 7. Soleil-Babinet compensator experiment. (a) Amplitude of frequency multiplication terms; (b) retardation; (c) azimuth angle of fast axis; (d) relationship between retardation and adjustment displacement
Fig. 8. Stress birefringence measurement experiment. (a) Retardation and birefringence; (b) azimuth angle of fast axis
Table 1. Experimental data of Soleil-Babinet compensator
View tableTable 1. Experimental data of Soleil-Babinet compensator
Adjustment displacement
xi /mm
Retardation of compensator /nm Retardation /nm Error /nm Relative error /% Standard
deviation /nm
0.023 0.8480 0.853 0.005 0.6 0.031 0.100 3.6860 3.617 -0.069 -1.9 0.020 0.500 18.4290 18.001 -0.428 -2.3 0.018 0.901 33.2090 32.986 -0.223 -0.7 0.014 1.301 47.9520 47.354 -0.598 -1.3 0.013 1.704 62.8060 62.091 -0.715 -1.1 0.020 2.104 77.5490 77.262 -0.287 -0.4 0.020 2.501 92.1820 91.559 -0.623 -0.7 0.022 2.901 106.9250 105.397 -1.528 -1.4 0.022 3.303 121.7420 121.404 -0.338 -0.3 0.030 3.700 136.3750 136.300 -0.075 -0.1 0.029 4.100 151.1180 151.053 -0.065 -0.1 0.032 4.304 158.6378 158.017 -0.620 -0.4 0.031
Table 2. Experimental data of stress birefringence measurement
View tableTable 2. Experimental data of stress birefringence measurement
Applied pressure value /N Stress retardation R /nm Standard deviation of retardation /nm Stress birefringence
Δn /（nm·cm-1）
Standard deviation of stress birefringence /（nm·cm-1） 0 0.558 0.023 1.86 0.08 3.5 2.108 0.030 7.03 0.10 12.0 6.677 0.036 22.26 0.12 20.0 11.291 0.034 37.64 0.11 34.5 18.803 0.039 62.68 0.13 39.5 21.360 0.038 71.20 0.13 50.0 26.262 0.050 87.54 0.17 54.2 29.275 0.037 97.58 0.12
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Kewu Li, Shuang Wang, Ziliang Liu, Zhibin Wang. Stress Birefringence Measurement Based on Double Cascaded Photoelastic Modulation with Differential Frequencies[J]. Acta Optica Sinica, 2023, 43(4): 0412001
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Jul. 18, 2022
Accepted: Aug. 31, 2022
Published Online: Feb. 16, 2023
The Author Email: Li Kewu (kewuli@nuc.edu.cn), Wang Zhibin (wangzhibin@nuc.edu.cn)
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