Switchable Plasmonic Metasurface Utilizing the Electro-Optic Kerr Effect of a Blue Phase Liquid Crystal |
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Authors: | Bernhard Atorf Simon Friesen Roman Rennerich Holger Mühlenbernd Thomas Zentgraf Heinz Kitzerow |
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Affiliation: | 1.Center for Optoelectronics and Photonics Paderborn (CeOPP),University of Paderborn,Paderborn,Germany |
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Abstract: | A switchable metasurface composed of plasmonic split ring resonators and a polymer-stabilized liquid crystal blue phase is developed. Owing to field-induced birefringence (electro-optic Kerr effect), the state of polarization of the incident near infrared radiation changes, when a voltage is applied to the liquid crystal. Thus, different resonant modes of the split ring resonators can be addressed and the transmission spectrum changes accordingly. In comparison with other liquid crystal phases, blue phases have several advantages. For example, they are optically isotropic in the field-off state, so that no alignment layer is required. The results of the present study indicate that the advantages of these mesophases can be utilized for switchable metasurfaces. |
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