Tunable topological edge modes in Su-Schrieffer-Heeger arrays
Chaplain, G.J.; Gliozzi, A.S.; Davies, B.; Urban, David; Descrovi, Emiliano; Bosia, F.; Craster, R.V.
Peer reviewed, Journal article
Accepted version
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Date
2023Metadata
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Abstract
A potential weakness of topological waveguides is that they act on a fixed narrow band of frequencies. However, by 3D printing samples from a photo-responsive polymer, we can obtain a device whose operating frequency can be fine-tuned dynamically using laser excitation. This greatly enhances existing static tunability strategies, typically based on modifying the geometry. We use a version of the classical Su–Schrieffer–Heeger model to demonstrate our approach.