Zongqun Yan, Tao Guo, Jian Wu, Shun Wang, Gaopo Jia, Jianchang Yang. Laser Multi-Target Indication Technique Based on Liquid Crystal Optical Phased Array and Volume Holographic Grating[J]. Acta Optica Sinica, 2020, 40(3): 0323001
- Acta Optica Sinica
- Vol. 40, Issue 3, 0323001 (2020)
Fig. 1. Phase modulation distribution of LCOPA
Fig. 2. Effects of parameters of LCOPA on far field light beam. (a) Packing ratio F; (b) electrode size a; (c) step number M in a period; (d) periodic number N
Fig. 3. Phase modulation pattern
Fig. 4. Phase deflection map of LCOPA under some deflection angle
Fig. 5. Local diagrams of phase control maps with different one-dimensional deflection angles and rotation angles of phase map. (a) One-dimensional angle is 0.0175°, and rotation angle is 45°; (b) one-dimension angle is 0.084°, and rotation angle is 56.3133°
Fig. 6. Schematic of two-dimensional large angle beam deflection control system
Fig. 7. Angle magnification schematics of MVBG(X) and LCOPA1 address. (a) Gating VBG1; (b) gating VBG2; (c) gating VBG3; (d) transmission of gating MVBG (X)
Fig. 8. Working process diagram of two-dimensional large angle beam deflection system
Fig. 9. Local diagrams of phase control maps of LCOPA1 and LCOPA2.(a)(b)(c) LCOPA1; (d)(e)(f) LCOPA2
Fig. 10. Comparison of deflection point and aiming point before and after correction
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Table 1. Angle distribution sheet of two-dimensional large angle beam deflection system(°)
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Table 2. Statistical results of error angle and real deflection angle before and after correction
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