title: Stretch-tuneable dielectric mirrors and optical microcavities.
abstract: We demonstrate how tuneable Distributed Bragg Reflectors (DBRs) and resonant micro-cavities can be built by a scalable layer assembly of the transparent utility rubbers polydimethylsiloxane and polystyrene-polyisoprene. Stretching the devices by more than 60% leads to an affine contraction of the layer thicknesses thereby tuning both DBR and cavity modes across the entire visible spectrum. Such rapidly- and reversibly- stretch-tuneable cavities can be used in tuneable micro-lasers and for quantitative optical strain sensing applications.
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
authors.forename: Mathias
authors.initials: M
authors.lastname: Kolle
authors.forename: Bo
authors.initials: B
authors.lastname: Zheng
authors.forename: Nicholas
authors.initials: N
authors.lastname: Gibbons
authors.forename: Jeremy J
authors.initials: JJ
authors.lastname: Baumberg
authors.forename: Ullrich
authors.initials: U
authors.lastname: Steiner