Fig. 1. Schematic of OFPA beam steering system

Fig. 2. Schematic of multi-beam steering of OFPA

Fig. 3. Intensity distributions of coherently combined beams. (a) Without phase noise; (b) with phase noise

Fig. 4. Schematic of sub-beam steering

Fig. 5. Experimental setup of OFPA for high-speed multi-beam steering

Fig. 6. Comparison of beam combination effect before and after phase calibration. (a) Before calibration; (b) after calibration

Fig. 7. Signal properties of APD (performance evaluation function). (a) Change of intensity distribution for on and off states of SPGD; (b) degradation curve of beam quality after calibration

Fig. 8. Intensity distributions of coherently combined light field. (a) Three-dimensional light field distribution; (b) experimental result (average value); (c) simulation result

Fig. 9. Intensity distributions for different steering angles

Fig. 10. Test of beam steering speed