Table 1 Simulation parameters of dual-layer liquid crystal Pancharatnam-Berry lens
From: Intensity-tunable achromatic cascade liquid crystal Pancharatnam-Berry lens
Layer1(d’ = 2.48 μm) : θ‘ (x, y, 396.8 nm); Layer2(d = 3.018 μm) : θ (x, y, 1064 nm) | Layer1(d’ = 2.48 μm): −θ‘ (x, y, 396.8 nm); Layer2(d = 3.018 μm): θ (x, y, 1064 nm) | ||||||
|---|---|---|---|---|---|---|---|
Incident wavelength (nm) | 1064 | 396.8 | 632.8 | 1064 | 632.8 | 396.8 | 1064 |
\({\Delta n}_{{eff}}^{{\prime} }\) | 0 | 0.24 | 0.1275 | 0.107 | 0 | 0 | 0.107 |
\({\Delta n}_{{eff}}\) | 0.1763 | 0 | 0.1047 | 0.088 | 0.1763 | 0.1763 | 0.088 |
\(\sin \frac{{\delta }^{{\prime} }}{2}\cos \frac{\delta }{2}\) | 0 | 1 | 0 | 0.49 | 0 | 0 | 0.49 |
\(\sin \frac{{\delta }^{{\prime} }}{2}\sin \frac{\delta }{2}\) | 0 | 0 | 1 | 0.49 | 0 | 0 | 0.49 |
\(\sin \frac{\delta }{2}\cos \frac{{\delta }^{{\prime} }}{2}\) | 1 | 0 | 0 | 0.49 | 0.48 | 0.8773 | 0.49 |
Fig. 2 results | b | c | d | f | i | j | g |
