Kaiting Liu, Xin Liu, Yuehe Ge, Jixiong Pu. Generation of Orbital Angular Momentum Vortex Beams Based on High-Efficiency Transmission Metasurfaces[J]. Acta Optica Sinica, 2019, 39(1): 0126016
- Acta Optica Sinica
- Vol. 39, Issue 1, 0126016 (2019)
Fig. 1. Structural diagram of metasurface
Fig. 2. Phase distribution of metasurface corresponding to vortex beam with topological charge value l=1. (a) Phase distribution at z=H; (b) phase distribution at z=0; (c) compensated phase distribution
Fig. 3. Phase distributions of metasurfaces corresponding to vortex beams with topological charge values l=±1, l=±2, l=±3, l=±4
Fig. 4. Structural diagram of metasurface unit. (a) Geometric structure of polarization grating; (b) geometric structure of notch ring; (c) simulation model of metasurface unit
Fig. 5. Simulation results of metasurface unit. (a) Transmission phase; (b) transmission efficiency
Fig. 6. Local unit distributions of metasurface
Fig. 7. Simulation results of vortex beams with topological charge values l=1, 2, 3, 4. (a)-(d) Phase distributions; (e)-(h) amplitude distributions; (i)-(l) far field radiation patterns
|
Table 1. Design parameters of eight different metasurface units
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20