Stretch-tuneable dielectric mirrors and optical microcavities.
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.
Kolle
Mathias
M
Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
Zheng
Bo
B
Gibbons
Nicholas
N
Baumberg
Jeremy J
JJ
Steiner
Ullrich
U