Fig. 1. Schematic diagram of multilayer structure model of subwavelength gold grating with asymmetric boundary conditions

Fig. 2. G-LCoS pixel structure diagram. (a) Schematic cross-section; (b) stereoscopic diagram

Fig. 3. Phase modulation of subwavelength gold grating under symmetric and asymmetric boundary conditions

Fig. 4. Effect of different refractive index intervals on reflection phase of liquid crystals. (a) Reflection phase at n1=1.7‒1.9; (b) amount of phase modulation when n₁ is in the range of 1.7‒1.9 and λ=430nm; (c) reflection phase at n1=1.5‒1.7; (d) amount of phase modulation when n₁ is in the range of 1.5‒1.7 and λ=412nm

Fig. 5. Effect of asymmetric boundary condition on reflection phase. (a)‒(c) Change in the amount of reflected phase modulation when n₁ is in the range of 1.7‒1.9 and n₃ is in the range of 1.9‒2.1; (d)‒(f) change in the amount of reflected phase modulation when n₁ is in the range of 1.5‒1.7 and n₃ is in the range of 1.9‒2.1