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An important property of electromagnetic fields which is partly responsible for the interaction between fields and chiral medium is called optical chirality. By enhancing this field property while maintaining constant input power, we are able to increase absorption of circularly polarized light by chiral molecules of a certain handedness. This enhancement is achieved through the use of plasmonic nano-particles...
Transparent Conducting Oxides (TCOs) enable the realization of practical plasmonic and metamaterial devices at the telecommunication frequency due to their low optical loss and CMOS compatibility. By employing a conventional dry-etching process, we have fabricated GZO plasmonic waveplates, which convert linearly polarized light into circularly polarized light.
We discuss theoretically and experimentally how plasmonic metasurfaces can largely control and manipulate the polarization state of light. By using ultrathin plasmonic arrays, circular polarization conversion and filtering is achieved over subwavelength distances.
In nature, circular polarization detection is unique to bio-systems, since human eyes cannot detect polarization information. Various animal species successfully use it for defense, signaling and orientation. It may be of great interest to reproduce these functionalities in artificial photonic devices, being able to distinguish different handedness of circular polarization, and to possibly integrate...
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