Fig. 1. (a) Schematic diagram of a transmitting telescope composed of adaptive phase-locking systems with large-scale emitting area; (b) Schematic diagram of controlled phase-locking and adaptive optical compensation device in “APPLE” systems^[25]

Fig. 2. Dynamic beam shaping based on fiber laser phased array^[12]

Fig. 3. Principles of dynamic beam steering by laser optical phased arrays^[26]

Fig. 4. Schematic diagrams of (a) binary grating phase control model and (b) blazed grating phase control model

Fig. 5. Schematic diagrams of two-dimensional beam steering based on 8×8 optical phased arrays by Xidian University^[40]

Fig. 6. Schematic diagram of beam steering system based on laser coherent beam combining by Institute of Optoelectronics, Chinese Academy of Sciences^[42]

Fig. 7. Discrete scanning realized by micro-lens arrays in one period (left); Quasi-continuous scanning realized by combination of micro-lens arrays and AFOCs in one period (right)^[43]

Fig. 8. Simulated results of continuous scanning by 19, 133 and 703 channels with controlled piston phase^[45]

Fig. 9. Diagrams of beam steering system by sixteen arrays with one-dimensional linear arrangement^[47]

Fig. 10. Designed patterns of DBL developed by Israeli Civan Company^[59]

Fig. 11. (a) Settings of the IFSW; (b) X-ray images of keyholes during laser welding; (c) Changes of intensity mode patterns of different welding patterns^[61]

Fig. 12. Schematic diagram of 57 apertures coherent beam combining system by TIL^[69]