Guohui Li, Jingliang Gu, Xian Yue, Rujian Xiang, Jianmin Li, Zhengjiao Xiang, Yinglei Du, Honglai Xu, Zhongxiang Luo, Zhiqiang Zhou, Hongming Yu, Hong Yan, Yidong Ye, Yi Ma, Xiangjie Zhao, Yingnan Peng, Yinhong Sun. Combination and Control Technology of Seven‐Beam Fiber Laser Phased Array[J]. Chinese Journal of Lasers, 2025, 52(7): 0705001
- Chinese Journal of Lasers
- Vol. 52, Issue 7, 0705001 (2025)
Fig. 1. Schematic of AFOC collimating beam and adjusting tilt
Fig. 2. Optical design of beam expansion collimation and detection of single fiber laser
Fig. 3. Optical design of fiber combination device. (a) Optical path diagram; (b) diagram of three-dimensional model
Fig. 4. Physical picture of CCD module and spot distributions on its target surface. (a) Internal structure of CCD; (b) two spots; (c) three spots
Fig. 5. Three-dimensional structure of AFOC. (a) Front; (b) back
Fig. 6. Internal structure of double-layer two-axis adjusting device. (a) Outer layer; (b) inner layer
Fig. 7. Simulation cloud maps of stress and strain of AFOC. (a) Stress; (b) strain
Fig. 8. Simulation cloud maps of uncoupled double-layer structure. (a) Double layer stress; (b) upper layer stress; (c) lower layer stress
Fig. 9. Modality analysis of double-layer structure. (a) First-order modality; (b) second-order modality; (c) third-order modality
Fig. 10. Deformation of structure caused by gravity
Fig. 11. Three-dimensional diagrams of frame structure of beam combination device. (a) Side view 1; (b) side view 2
Fig. 12. Simulation cloud maps of stress and strain of frame structure when temperature changes. (a) Stress; (b) strain
Fig. 13. Simulation cloud maps of stress and strain of frame structure under gravity. (a) Stress; (b) strain
Fig. 14. Simulation cloud maps of 1‒3 order modalities of beam combination device. (a) First-order modality; (b) second-order modality; (c) third-order modality
Fig. 15. Three-dimensional diagram of beam combination device and duty cycle of optical spots. (a) Three-dimensional diagram; (b) duty cycle
Fig. 16. Principle diagram of AFOC
Fig. 17. Calibration diagram of optical axis pointing consistency
Fig. 18. Screenshots of 7-beam optical axis consistency calibration and built-in CCD spot closed-loop zero acquisition. (a) Far-field spot; (b) close-loop zero
Fig. 19. Screenshot of spot centroid curve during AFOC close-loop
Fig. 20. X-axis dynamic range test curves. (a) Forward; (b) reverse
Fig. 21. Y-axis dynamic range test curves. (a) Forward; (b) reverse
Fig. 22. AFOC close-loop resolution test curves. (a) X-axis; (b) Y-axis
Fig. 23. Experimental results of 7-channel laser phase locking. (a) Power-in-bucket curves of open/close loop; (b) close-loop spot distribution
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