Jia-Lin Feng, Hong-Yu Shi, Yuan Wang, An-Xue Zhang, Zhuo Xu. Wide-angle method for vortex electromagnetic wave generation using field transformation [J]. Acta Physica Sinica, 2020, 69(13): 135201-1
- Acta Physica Sinica
- Vol. 69, Issue 13, 135201-1 (2020)
Fig. 1. Schematic diagram of the FT medium.
Fig. 2. Artificial birefringence medium: The
coordinate is twisted along the y -axis by 45° to the
coordinate. The incident plane is x -y plane,
is the incident angle,
is the wave vector of the incident wave.
coordinate is twisted along the coordinate. The incident plane is is the incident angle,
is the wave vector of the incident wave. 
Fig. 3. Pancharatnam-Berry phase: When the EM wave incident on the unit along y direction, and the unit rotates
around the y axis, the phase changed
.
around the . Fig. 4. The model of unit cell.
Fig. 5. (a) The amplitude of
and
; (b) the phase of
and
.
and
; (b) the phase of
and
. Fig. 6. The amplitude of
and
.
and
. Fig. 7. (a) Main view of dielectric rings, it’s consists of 100 rings with radius of 4 mm and thickness of dielectric rings is 30 mm; (b) side view of dielectric rings.
Fig. 8. (a) The transmission wave while incident angle is 0°; (b) E -field distribution around dielectric rings; (c) amplitude of RCP wave at 13 GHz ; (d) phase of RCP wave at 13 GHz.
Fig. 9. (a) The transmission wave while incident angle is 20°; (b) E -field distribution around dielectric rings; (c) amplitude of RCP wave at 20° oblique incidence; (d) phase of RCP wave at 20° oblique incidence.
Fig. 10. (a) The transmission wave while incident angle is 40°; (b) E -field distribution around dielectric rings; (c) amplitude of RCP wave at 40° oblique incidence; (d) phase of RCP wave at 40° oblique incidence.
Fig. 11. (a) The transmission wave while incident angle is 50°; (b) E -field distribution around dielectric rings; (c) amplitude of RCP wave at 50° oblique incidence; (d) phase of RCP wave at 50° oblique incidence.
Fig. 12. (a) The transmission wave while incident angle is 60°; (b) E -field distribution around dielectric rings at 60° oblique incidence; (c) amplitude of RCP wave at 60° oblique incidence; (d) phase of RCP wave at 60° oblique incidence.
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Table 1. Maximum values of RCP at different frequencies when normal incidence.
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Table 2. Maximum values of RCP at different frequencies when incident angle is 20°.
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Table 3. Maximum values of RCP at different frequencies when incident angle is 40°.
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Table 4. Maximum values of RCP at different frequencies when incident angle is 50°.
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Table 5. Maximum values of RCP at different frequencies when incident angle is 60°.
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