Chinese Journal of Quantum Electronics, Volume. 41, Issue 6, 872(2024)
Research on calibration method of large‐aperture meter‐scale laser beam quality measuring device
Figures & Tables(12)
Fig. 3. Cube prism group inverted triangle beam splitter (a) and lens array hexagonal layout (b)
Fig. 4. Three scanning modes. (a) One way scanning; (b) Continuous scanning; (c) Scanning from middle to both sides
Fig. 6. wavefront image under ideal wavefront, the same residual error, and three scanning modes.(a) One way scanning; (b) Continuous scanning; (c) Scanning from middle to both sides
Fig. 7. Effect of wavefront measurement of error is 5 μrad with measuring system diameter is 1.27 m and β is 2.33.(a) Initial wavefront; (b) Recovered wavefront; (c) Recovered error
Fig. 8. Effect of wavefront measurement of error is 5 μrad with measuring system diameter is 1.27 m and β is 2.33. (a) Initial wavefront; (b) Recovered wavefront; (c) Recovered error
Fig. 9. Effect of wavefront measurement of error is 0.5 μrad with measuring system diameter is 1.27 m and β is 2.33.(a) Initial wavefront; (b) Recovered wavefront; (c) Recovered error
Table 1. Initial aberration caused by the residual error of the parallelism of calibration light source under different scanning mode
View tableView in ArticleTable 1. Initial aberration caused by the residual error of the parallelism of calibration light source under different scanning mode
Parallelism error /μrad Scanning mode Aberrations of the first 6 orders of Zernike polynomial Z1 Z2 Z3 Z4 Z5 Z6 10 one way scanning 0 0.5062 0.6267 0.0002 0.3200 0.0004 continuous scanning 0 0.3124 0.6267 0.0314 0.3200 0.0444 scanning from middle to both sides 0 0.0765 -0.0016 0.0001 0.3200 0.0001 5 one way scanning 0 0.2531 0.3134 0.0001 0.1600 0.0002 continuous scanning 0 0.1562 0.3134 0.0157 0.1600 0.0222 scanning from middle to both sides 0 0.0383 -0.0008 0.0000 0.1600 0.0000 3 one way scanning 0 0.1519 0.1880 0.0001 0.0960 0.0001 continuous scanning 0 0.0937 0.1880 0.0094 0.0960 0.0133 scanning from middle to both sides 0 0.0230 -0.0005 0.0000 0.0960 0.0000
Table 2. Fluctuation of β value using one way scanning mode with 127 mm diameter of the measuring system
View tableView in ArticleTable 2. Fluctuation of β value using one way scanning mode with 127 mm diameter of the measuring system
β value of initial wavefront Error/μrad β value of recovered wavefront 1.46 10 2.90 5 1.91 3 1.72 1 1.41 2.33 10 4.43 5 3.46 3 2.63 1 2.33 4.53 10 7.20 5 6.22 3 5.10 1 4.53
Table 3. Fluctuation of β value using one way scanning mode with 1.27 m diameter of the measuring system
View tableView in ArticleTable 3. Fluctuation of β value using one way scanning mode with 1.27 m diameter of the measuring system
β value of initial wavefront Error/μrad β value of recovered wavefront 1.46 2.0 4.94 1.0 2.84 0.8 2.43 0.5 1.92 0.3 1.61 2.33 2.0 5.25 1.0 3.30 0.8 3.00 0.5 2.58 0.3 2.28 4.53 2.0 7.09 1.0 5.35 0.8 5.04 0.5 4.69 0.3 4.48
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Fei ZHU, Zaihong HOU, Gangyu WANG, Laian QIN, Xu JIN, Decheng WU. Research on calibration method of large‐aperture meter‐scale laser beam quality measuring device[J]. Chinese Journal of Quantum Electronics, 2024, 41(6): 872
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Received: Dec. 12, 2022
Accepted: --
Published Online: Jan. 8, 2025
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