Chinese Optics, Volume. 17, Issue 2, 342(2024)
Multi-channel laser beam combining and closed-loop correction technology in visible light band
Fig. 1. Overall layout of laser beam combining and closed-loop correction system
Fig. 2. Schematic diagram of beam pointing adjustment by two-dimensional oscillating mirror
Fig. 5. Schematic diagram of beam left and right position adjustment
Fig. 7. Schematic diagram of beam high and low position adjustment
Fig. 8. Principle and physical map of beam high-low position adjusting device
Fig. 10. Real-time monitoring data of beam 1 periodically closed-loop beam pointing deviation
Fig. 11. Real-time monitoring data of beam 1 periodically closed-loop beam combining position deviation
Fig. 12. Real-time monitoring data of beam 2 periodic closed-loop beam combining pointing deviation
Fig. 13. Real-time monitoring data of beam 2 periodic closed-loop beam combining position deviation
Fig. 15. Optical path diagram of the beam adjustment section of the beam combining system
Table 1. Design requirements for beam combining system
View tableView in ArticleTable 1. Design requirements for beam combining system
Items Requirement Wavelength/nm 400～900 Aperture/mm ≥Φ40 Precision of directio/μrad ±20 Precision of positional/mm ±1 Direction correction range/μrad θx≥±600; θy≥±600 Positional correction range/mm ≥±7.5
Table 2. Pointing adjustment simulation experiment data
View tableView in ArticleTable 2. Pointing adjustment simulation experiment data
方位 偏差δy 俯仰 偏差δx 方位 控制量α 俯仰 控制量β δy与2α 差值 δx与 $ \sqrt{2}\beta $ 差值 −1500 0 −749.886 0 −0.228 0 −1000 0 −499.992 0 −0.016 0 −500 0 −249.959 0 −0.082 0 500 0 249.958 0 0.084 0 1000 0 499.922 0 0.156 0 1500 0 749.886 0 0.228 0 0 −1500 0 −1060.652 0 −0.012 0 −1000 0 −707.099 0 −0.011 0 −500 0 −353.546 0 −0.010 0 0 0 0 0 0 0 500 0 353.546 0 0.010 0 1000 0 707.099 0 0.011 0 1500 0 1060.652 0 0.011 250 250 124.982 176.790 0.036 −0.019 500 500 249.930 353.630 0.140 −0.108 1000 1000 499.740 707.450 0.520 −0.485
Table 3. Simulation experiment data of left and right position adjustment
View tableView in ArticleTable 3. Simulation experiment data of left and right position adjustment
输入输出参数 数值 左右控制量(mm) 0.1 1 2 3 4 6 8 10 坐标变化量 $ \Delta x $ (μm)0.224 2.249 3.699 5.249 6.598 7.499 8.899 10.512 坐标变化量 $ \Delta y $ (mm)0.099 0.999 1.997 2.995 3.994 5.991 7.988 9.985
Table 4. Simulated experimental data for high and low position adjustment
View tableView in ArticleTable 4. Simulated experimental data for high and low position adjustment
调节参数 数值 高低位置控制量(mm) 0.1 1 2 3 4 6 8 10 坐标变化量 $ \Delta x $ (mm)0.100 1.002 2.002 3.004 4.005 6.009 8.011 10.017 坐标变化量 $ \Delta y $ (μm)−0.300 −3.124 −6.125 −9.253 −9.527 −10.836 −11.259 −12.452
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Xin-hang XU, Gao-sheng LI, Bing XIE, Xu-dong HAN. Multi-channel laser beam combining and closed-loop correction technology in visible light band[J]. Chinese Optics, 2024, 17(2): 342
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Received: May. 4, 2023
Accepted: --
Published Online: Apr. 15, 2024
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