.png){kind=icon}
.png){kind=icon}
Return
Efficient generation of polarization multiplexed OAM using levitated metasurfaces
.png){kind=icon}
PRE
AI
C
H
S
Y
L
DOI：10.15302/frontphys.2025.012202.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Dual-polarization (DP) vortex waves (VWs) are widely applied in optical, electromagnetic, and quantum science owing to their ability to simultaneously convey two distinct and non-interfering orbital angular momentums (OAMs). Here, we propose a lightweight levitated meta-atom to achieve 360 degrees phase control with a difference of no more than 1 degrees while maximizing the reflection efficiency. In combination with convergent phase modulation, a OAM metasurface array that facilitates the generation of DP VWs with high mode purity and low divergence angles was designed. The measured DP VW bearing mode l = 1 had only 4 degrees divergence angle and 84% mode purity at 5.8 GHz. Furthermore, DP VWs with integer, fractional (l = 1.5) and higher order (l = 8) modes are discussed based on an OAM purity spectrum analysis. The experimental results were consistent with the simulation results, demonstrating the practicality of the proposed DP OAM metasurface and its potential applications in the field of multithreaded communication systems.
Keywords:
dual-polarization
orbital angular momentum
low divergence angles
high mode purity
Journal
IF:
5.3
Papers:
1.4K
Citations:
3.7K
Organization
Cited Papers