Narrowband and ultranarrowband filters with electro-optic structrally chiral materials

Akhlesh Lakhtakia
CATMAS-Computational & Theoretical Materials Sciences Group

Department of Engineering Sciences & Mechanics

Pennsylvania State University, University Park, PA 16802-6812, USA

E mail:[email protected]

When a circularly polarsed plane wave is normally incident on a slab of a structurally chiral material with local 42 m point group symmetry and a central twist defect, the slab can function as either a narrowband reflection hole filter for co-handed plane waves or an ultranarrowband transmission hole filter for cross-handed plane waves, depending on its thickness and the magnitude of the applied dc electric field. Exploitation of the Pockels effect significantly reduces the thickness of the slab. © Anita Publications. All rights reserved.
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