AI Article Synopsis
- The study presents a new method for achieving significant asymmetric reflection of circularly polarized light using single-layer extrinsic chiral metasurfaces at angles of incidence.
- This reflection is driven by extrinsic chirality, resulting in a measured asymmetric reflection of about 40% and notable differences in phase, affecting how light's polarization states convert.
- The findings indicate a reflective polarization shift of approximately 14° from the expected symmetry, offering insights for developing advanced systems to control electromagnetic waves.
Article Abstract
We propose and experimentally demonstrate that giant asymmetric reflection of circularly polarized light based on asymmetric coupling can be achieved in single-layer extrinsic chiral metasurfaces at oblique incidence. The asymmetric coupling and asymmetric reflection in the extrinsic chiral metasurfaces are caused by extrinsic chirality, allowing them to have extremely high values. An asymmetric reflection of approximately 40% is measured. Furthermore, the asymmetric reflection of extrinsic chiral metasurfaces is demonstrated not only in intensity but also in phase retardation, which induces asymmetric polarization state conversion. An approximately 14° asymmetric reflected polarization offset from the symmetry axis is achieved. Our research provides an effective new method for constructing huge asymmetric coupled systems to manipulate electromagnetic waves.
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| http://dx.doi.org/10.1364/OE.478073 | DOI Listing |
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