Jie Hu, Shengping Du, Hongyang Guo. Research Progress on Beam Scanning Based on Liquid Crystal Optical Phased Array[J]. Laser & Optoelectronics Progress, 2019, 56(11): 110002
- Laser & Optoelectronics Progress
- Vol. 56, Issue 11, 110002 (2019)
Fig. 1. Schematic of N-unit phase array. (a) Phased array model; (b) simulated blazed grating
Fig. 2. Basic structure of LCOPA. (a) Without voltage applied; (b) with voltage applied
![Different liquid crystal phase control models. (a) LCOPA by Raytheon[1]; (b) high-precision scanning with SAC[19]](/Images/icon/loading.gif){kind=icon}
Fig. 3. Different liquid crystal phase control models. (a) LCOPA by Raytheon[1]; (b) high-precision scanning with SAC[19]
Fig. 4. Rising time and falling time with and without Spiking algorithm (Δ? is phase change)[54]
Fig. 5. Time response curves for 0-2π phase. (a) Rising process; (b) falling process
Fig. 6. Beam scanning based on phased array model[50]. (a) Phase difference of electrode versus steering angle; (b) steering angle versus diffraction efficiency
Fig. 7. Diffraction efficiency improvement by four optimization approaches[57]
Fig. 8. Flyback
Fig. 9. Steering diffraction efficiency versus steering angle[47]
Fig. 10. Self-made LCOPA and experimental result by University of Electronic Science and Technology of China[20]. (a) LCOPA; (b) experimental result of beam steering
Fig. 11. Cascaded scheme used for 2D beam scanning[24]
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