Abstract
AbstractAccelerated beams have many applications because of their remarkable ability to propagate along curved trajectories. An accelerated beam with a non‐monotonic trajectory provides more beam deformability and trajectory concealment. This paper proposes direction‐reversible accelerated beam generation on nanometer scale based on metasurfaces. The non‐monotonic trajectory of the beam can be obtained by designing the geometric metasurface, while the curvature of the light trajectory can be adjusted by changing the angles of rectangular nanoholes. A theoretical expression for the modified wavefront of the proposed beam is deduced, and simulation and experiment results confirm the performance of the metasurface for generating a direction‐reversible accelerated beam. Discussions on the self‐healing of the accelerated beam and the influence of incident conditions on the curve trajectory show the trajectory controllability of the accelerated beam during the propagation. This work paves one way for tailoring the accelerated fields with complex trajectories, and it is helpful to expand the applications of accelerated beams.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.